{"title":"CSA Certified","description":"\u003cp\u003eComplete assembly CSA certification — not just the actuator. Every product in this collection carries CSA certification covering the damper body, drive, and all listed configurations as a complete assembly. For AHJ sign-off, building inspection, and permitted residential and commercial installations across Canada and the US. HAC-FS is excluded — it is the same hardware without certification and is listed separately for non-permitted applications only.\u003c\/p\u003e","products":[{"product_id":"hom-combustion-air-damper-24vac","title":"HOM Motorized Combustion Air Damper — CSA Certified, 24 Vac, 4\"–9\", Spring Return","description":"\u003cp\u003e\u003cem\u003eProduct image is representative only. Actual product may differ in appearance depending on size, configuration, and options selected at order.\u003c\/em\u003e\u003c\/p\u003e\n\u003cstyle\u003e\n  .hom-desc * { box-sizing: border-box; margin: 0; padding: 0; }\n  .hom-desc { font-family: 'Open Sans', sans-serif; color: #001F3F; line-height: 1.6; font-size: 15px; }\n\n  .hom-desc__intro { font-size: 15px; line-height: 1.75; color: #374151; margin-bottom: 20px; }\n\n  .hom-desc__bullets { display: flex; flex-direction: column; gap: 6px; margin-bottom: 20px; }\n  .hom-desc__bullet { display: flex; align-items: flex-start; gap: 10px; }\n  .hom-desc__bullet-check { color: #C8102E; font-weight: 700; font-size: 14px; flex-shrink: 0; line-height: 1.6; }\n  .hom-desc__bullet-text { font-size: 14px; color: #374151; font-family: 'Open Sans', sans-serif; line-height: 1.6; }\n  .hom-desc__bullet-text strong { font-family: 'Montserrat', sans-serif; font-weight: 700; color: #001F3F; }\n\n  .hom-desc__warning { background: #fff3f4; border-left: 4px solid #C8102E; border-radius: 0 4px 4px 0; padding: 12px 16px; margin-bottom: 20px; font-size: 13.5px; color: #001F3F; font-family: 'Open Sans', sans-serif; line-height: 1.6; }\n  .hom-desc__warning strong { font-family: 'Montserrat', sans-serif; font-weight: 700; color: #C8102E; }\n\n  .hom-desc__note { background: #F3F6F8; border-left: 4px solid #001F3F; border-radius: 0 4px 4px 0; padding: 12px 16px; margin-bottom: 20px; font-size: 13.5px; color: #001F3F; font-family: 'Open Sans', sans-serif; line-height: 1.6; }\n  .hom-desc__note strong { font-family: 'Montserrat', sans-serif; font-weight: 700; }\n\n  .hom-desc__specs { display: grid; grid-template-columns: repeat(auto-fill, minmax(160px, 1fr)); gap: 8px; margin-bottom: 20px; }\n  .hom-desc__spec { background: #F3F6F8; border: 1px solid #e2e8f0; border-radius: 5px; padding: 10px 12px; }\n  .hom-desc__spec-label { font-family: 'Montserrat', sans-serif; font-size: 10px; font-weight: 700; text-transform: uppercase; letter-spacing: 0.07em; color: #718096; margin-bottom: 3px; }\n  .hom-desc__spec-value { font-family: 'Montserrat', sans-serif; font-size: 12.5px; font-weight: 700; color: #001F3F; line-height: 1.35; }\n  .hom-desc__spec--highlight { background: #001F3F; border-color: #001F3F; }\n  .hom-desc__spec--highlight .hom-desc__spec-label { color: rgba(255,255,255,0.5); }\n  .hom-desc__spec--highlight .hom-desc__spec-value { color: #FFFFFF; }\n\n  .hom-desc__variants { display: grid; grid-template-columns: 1fr 1fr; gap: 8px; margin-bottom: 20px; }\n  .hom-desc__variant { background: #F3F6F8; border: 1px solid #e2e8f0; border-radius: 5px; padding: 12px 14px; }\n  .hom-desc__variant-code { font-family: 'Montserrat', sans-serif; font-size: 13px; font-weight: 800; color: #C8102E; margin-bottom: 3px; }\n  .hom-desc__variant-name { font-family: 'Montserrat', sans-serif; font-size: 11.5px; font-weight: 700; color: #001F3F; margin-bottom: 4px; }\n  .hom-desc__variant-desc { font-size: 12px; color: #374151; font-family: 'Open Sans', sans-serif; line-height: 1.45; }\n\n  .hom-desc__warranty { display: flex; align-items: center; gap: 10px; background: #001F3F; border-radius: 5px; padding: 12px 16px; }\n  .hom-desc__warranty-text { font-family: 'Montserrat', sans-serif; font-size: 13px; font-weight: 700; color: #FFFFFF; }\n  .hom-desc__warranty-sub { font-size: 12px; color: rgba(255,255,255,0.6); font-family: 'Open Sans', sans-serif; margin-top: 2px; }\n\n  @media (max-width: 480px) {\n    .hom-desc__variants { grid-template-columns: 1fr; }\n  }\n\u003c\/style\u003e\n\u003cdiv class=\"hom-desc\"\u003e\n\u003cp class=\"hom-desc__intro\"\u003eCSA-certified motorized combustion air damper for furnaces, boilers, fireplaces, and water heaters. The appliance cannot fire until the damper proves open — closing the combustion air intake when the appliance is off and interlocking it with the appliance safety circuit on demand. 24 Vac, 4\"–9\", Power Close \/ Spring Open.\u003c\/p\u003e\n\u003cdiv class=\"hom-desc__bullets\"\u003e\n\u003cdiv class=\"hom-desc__bullet\"\u003e\n\u003cspan class=\"hom-desc__bullet-check\"\u003e✓\u003c\/span\u003e \u003cspan class=\"hom-desc__bullet-text\"\u003e\u003cstrong\u003ePower Close \/ Spring Open\u003c\/strong\u003e — motor holds the damper closed when the appliance is off; spring opens it the moment power is removed when the appliance fires, keeping the combustion air path clear\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"hom-desc__bullet\"\u003e\n\u003cspan class=\"hom-desc__bullet-check\"\u003e✓\u003c\/span\u003e \u003cspan class=\"hom-desc__bullet-text\"\u003e\u003cstrong\u003eCSA certified — complete assembly\u003c\/strong\u003e — damper body, drive, and control hardware together; covers Canadian and US installations\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"hom-desc__bullet\"\u003e\n\u003cspan class=\"hom-desc__bullet-check\"\u003e✓\u003c\/span\u003e \u003cspan class=\"hom-desc__bullet-text\"\u003e\u003cstrong\u003eBuilt-in end switch\u003c\/strong\u003e — confirms blade has physically reached open position; required for ADP relay adaptor combustion air interlock so the appliance cannot fire until the damper proves open\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"hom-desc__bullet\"\u003e\n\u003cspan class=\"hom-desc__bullet-check\"\u003e✓\u003c\/span\u003e \u003cspan class=\"hom-desc__bullet-text\"\u003e\u003cstrong\u003eTest\/Run switch\u003c\/strong\u003e — allows manual override to hold the damper open for summer months or appliance troubleshooting without powering the motor continuously\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"hom-desc__bullet\"\u003e\n\u003cspan class=\"hom-desc__bullet-check\"\u003e✓\u003c\/span\u003e \u003cspan class=\"hom-desc__bullet-text\"\u003e\u003cstrong\u003eAdjustable extension sleeve\u003c\/strong\u003e — covers wall thicknesses 7½\"–14\" without custom fabrication; flashing included\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"hom-desc__bullet\"\u003e\n\u003cspan class=\"hom-desc__bullet-check\"\u003e✓\u003c\/span\u003e \u003cspan class=\"hom-desc__bullet-text\"\u003e\u003cstrong\u003eNot suitable for dryer ventilation\u003c\/strong\u003e — lint accumulation in the motor assembly causes premature failure; use the BDH Back Draft Hood for dryer exhaust\u003c\/span\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"hom-desc__variants\"\u003e\n\u003cdiv class=\"hom-desc__variant\"\u003e\n\u003cdiv class=\"hom-desc__variant-code\"\u003eSF1\u003c\/div\u003e\n\u003cdiv class=\"hom-desc__variant-name\"\u003eSingle-furnace — one appliance\u003c\/div\u003e\n\u003cdiv class=\"hom-desc__variant-desc\"\u003eControls and interlocks one furnace, boiler, or appliance. Standard configuration for most residential installations.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"hom-desc__variant\"\u003e\n\u003cdiv class=\"hom-desc__variant-code\"\u003eSF2\u003c\/div\u003e\n\u003cdiv class=\"hom-desc__variant-name\"\u003eDual-furnace — two appliances\u003c\/div\u003e\n\u003cdiv class=\"hom-desc__variant-desc\"\u003eOne damper interlocks with two appliances. Either appliance calling for heat opens the damper; neither can fire until it proves open.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"hom-desc__warning\"\u003e\n\u003cstrong\u003eSF1 vs. SF2 — confirm before ordering.\u003c\/strong\u003e SF1 is for installations with one appliance sharing the combustion air duct. SF2 is for installations where two appliances share the same combustion air duct and either may call for heat independently. For commercial applications with appliances rated over 400,000 BTU, slave dampers can be added to the SF1 or SF2 — contact the factory.\u003c\/div\u003e\n\u003cdiv class=\"hom-desc__specs\"\u003e\n\u003cdiv class=\"hom-desc__spec hom-desc__spec--highlight\"\u003e\n\u003cdiv class=\"hom-desc__spec-label\"\u003eInterlock\u003c\/div\u003e\n\u003cdiv class=\"hom-desc__spec-value\"\u003eAppliance cannot fire until damper proves open\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"hom-desc__spec\"\u003e\n\u003cdiv class=\"hom-desc__spec-label\"\u003eSizes\u003c\/div\u003e\n\u003cdiv class=\"hom-desc__spec-value\"\u003e4\"–9\"\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"hom-desc__spec\"\u003e\n\u003cdiv class=\"hom-desc__spec-label\"\u003eVoltage\u003c\/div\u003e\n\u003cdiv class=\"hom-desc__spec-value\"\u003e24 Vac\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"hom-desc__spec\"\u003e\n\u003cdiv class=\"hom-desc__spec-label\"\u003eAction\u003c\/div\u003e\n\u003cdiv class=\"hom-desc__spec-value\"\u003ePower Close \/ Spring Open\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"hom-desc__spec\"\u003e\n\u003cdiv class=\"hom-desc__spec-label\"\u003eWall Thickness\u003c\/div\u003e\n\u003cdiv class=\"hom-desc__spec-value\"\u003e7½\"–14\" adjustable\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"hom-desc__spec\"\u003e\n\u003cdiv class=\"hom-desc__spec-label\"\u003eCertification\u003c\/div\u003e\n\u003cdiv class=\"hom-desc__spec-value\"\u003eCSA — complete assembly\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"hom-desc__note\"\u003e\n\u003cstrong\u003eNeed an ADP relay adaptor?\u003c\/strong\u003e For combustion air interlock — appliance cannot fire until the HOM end switch confirms the damper is open — pair the HOM with the correct ADP: ADP-0MV2-S5A (millivolt appliances), ADP-0240-05A (24 Vac furnace), or ADP-1102-S5A (120 Vac boiler\/tankless).\u003c\/div\u003e\n\u003cdiv class=\"hom-desc__warranty\"\u003e\n\u003csvg style=\"flex-shrink: 0;\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" fill=\"none\" viewbox=\"0 0 24 24\" height=\"20\" width=\"20\"\u003e\n      \u003cpath stroke-linejoin=\"round\" stroke-linecap=\"round\" stroke-width=\"1.8\" stroke=\"#C8102E\" d=\"M12 22s8-4 8-10V5l-8-3-8 3v7c0 6 8 10 8 10z\"\u003e\u003c\/path\u003e\n      \u003cpath stroke-linejoin=\"round\" stroke-linecap=\"round\" stroke-width=\"1.8\" stroke=\"#C8102E\" d=\"M9 12l2 2 4-4\"\u003e\u003c\/path\u003e\n    \u003c\/svg\u003e\n\u003cdiv\u003e\n\u003cdiv class=\"hom-desc__warranty-text\"\u003e2-year electrical · 10-year mechanical warranty\u003c\/div\u003e\n\u003cdiv class=\"hom-desc__warranty-sub\"\u003eMade in Canada · 40+ years field-proven in Canadian climates\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e","brand":"Hoyme Manufacturing","offers":[{"title":"4\" \/ SF1","offer_id":43079070384171,"sku":"HOM-0411-SF1","price":354.0,"currency_code":"CAD","in_stock":true},{"title":"4\" \/ SF2","offer_id":43079070416939,"sku":"HOM-0412-SF2","price":439.0,"currency_code":"CAD","in_stock":true},{"title":"4\" \/ S01","offer_id":43079070449707,"sku":"HOM-0410-SO1","price":289.0,"currency_code":"CAD","in_stock":true},{"title":"4\" \/ S02","offer_id":43079070482475,"sku":"HOM-0411-SO2","price":345.0,"currency_code":"CAD","in_stock":true},{"title":"5\" \/ SF1","offer_id":43079070515243,"sku":"HOM-0511-SF1","price":359.0,"currency_code":"CAD","in_stock":true},{"title":"5\" \/ SF2","offer_id":43079070548011,"sku":"HOM-0512-SF2","price":441.0,"currency_code":"CAD","in_stock":true},{"title":"5\" \/ S01","offer_id":43079070580779,"sku":"HOM-0510-SO1","price":295.0,"currency_code":"CAD","in_stock":true},{"title":"5\" \/ S02","offer_id":43079070613547,"sku":"HOM-0511-SO2","price":348.0,"currency_code":"CAD","in_stock":true},{"title":"6\" \/ SF1","offer_id":43079070646315,"sku":"HOM-0611-SF1","price":363.0,"currency_code":"CAD","in_stock":true},{"title":"6\" \/ SF2","offer_id":43079070679083,"sku":"HOM-0612-SF2","price":448.0,"currency_code":"CAD","in_stock":true},{"title":"6\" \/ S01","offer_id":43079070711851,"sku":"HOM-0610-SO1","price":296.0,"currency_code":"CAD","in_stock":true},{"title":"6\" \/ S02","offer_id":43079070744619,"sku":"HOM-0611-SO2","price":355.0,"currency_code":"CAD","in_stock":true},{"title":"7\" \/ SF1","offer_id":43079070777387,"sku":"HOM-0711-SF1","price":369.0,"currency_code":"CAD","in_stock":true},{"title":"7\" \/ SF2","offer_id":43079070810155,"sku":"HOM-0712-SF2","price":452.0,"currency_code":"CAD","in_stock":true},{"title":"7\" \/ S01","offer_id":43079070842923,"sku":"HOM-0710-SO1","price":305.0,"currency_code":"CAD","in_stock":true},{"title":"7\" \/ S02","offer_id":43079070875691,"sku":"HOM-0711-SO2","price":361.0,"currency_code":"CAD","in_stock":true},{"title":"8\" \/ SF1","offer_id":43079070908459,"sku":"HOM-0811-SF1","price":372.0,"currency_code":"CAD","in_stock":true},{"title":"8\" \/ SF2","offer_id":43079070941227,"sku":"HOM-0812-SF2","price":460.0,"currency_code":"CAD","in_stock":true},{"title":"8\" \/ S01","offer_id":43079070973995,"sku":"HOM-0810-SO1","price":310.0,"currency_code":"CAD","in_stock":true},{"title":"8\" \/ S02","offer_id":43079071006763,"sku":"HOM-0811-SO2","price":367.0,"currency_code":"CAD","in_stock":true},{"title":"9\" \/ SF1","offer_id":43079071039531,"sku":"HOM-0911-SF1","price":383.0,"currency_code":"CAD","in_stock":true},{"title":"9\" \/ SF2","offer_id":43079071072299,"sku":"HOM-0912-SF2","price":465.0,"currency_code":"CAD","in_stock":true},{"title":"9\" \/ S01","offer_id":43079071105067,"sku":"HOM-0910-SO1","price":317.0,"currency_code":"CAD","in_stock":true},{"title":"9\" \/ S02","offer_id":43079071137835,"sku":"HOM-0911-SO2","price":372.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0647\/3459\/3067\/files\/image_92_7e73faad-192c-40b7-bd14-e45db1c8d48b.png?v=1775771670"},{"product_id":"mac-terminating-end-fresh-air-damper-24vac","title":"MAC Motorized Fresh Air Damper — CSA Certified, Terminating End, 24 Vac, 4\"–9\"","description":"\u003cp\u003e\u003cem\u003eProduct image is representative only. Actual product may differ in appearance depending on size, configuration, and options selected at order.\u003c\/em\u003e\u003c\/p\u003e\n\u003cstyle\u003e   .mac-desc * { box-sizing: border-box; margin: 0; padding: 0; }\n  .mac-desc { font-family: 'Open Sans', sans-serif; color: #001F3F; line-height: 1.6; font-size: 15px; }\n\n  .mac-desc__intro { font-size: 15px; line-height: 1.75; color: #374151; margin-bottom: 20px; }\n\n  .mac-desc__bullets { display: flex; flex-direction: column; gap: 6px; margin-bottom: 20px; }\n  .mac-desc__bullet { display: flex; align-items: flex-start; gap: 10px; }\n  .mac-desc__bullet-check { color: #C8102E; font-weight: 700; font-size: 14px; flex-shrink: 0; line-height: 1.6; }\n  .mac-desc__bullet-text { font-size: 14px; color: #374151; font-family: 'Open Sans', sans-serif; line-height: 1.6; }\n  .mac-desc__bullet-text strong { font-family: 'Montserrat', sans-serif; font-weight: 700; color: #001F3F; }\n\n  .mac-desc__warning { background: #fff3f4; border-left: 4px solid #C8102E; border-radius: 0 4px 4px 0; padding: 12px 16px; margin-bottom: 20px; font-size: 13.5px; color: #001F3F; font-family: 'Open Sans', sans-serif; line-height: 1.6; }\n  .mac-desc__warning strong { font-family: 'Montserrat', sans-serif; font-weight: 700; color: #C8102E; }\n\n  .mac-desc__note { background: #F3F6F8; border-left: 4px solid #001F3F; border-radius: 0 4px 4px 0; padding: 12px 16px; margin-bottom: 20px; font-size: 13.5px; color: #001F3F; font-family: 'Open Sans', sans-serif; line-height: 1.6; }\n  .mac-desc__note strong { font-family: 'Montserrat', sans-serif; font-weight: 700; }\n\n  .mac-desc__compare { display: grid; grid-template-columns: 1fr 1fr; gap: 8px; margin-bottom: 20px; }\n  .mac-desc__compare-card { background: #F3F6F8; border: 1px solid #e2e8f0; border-radius: 5px; padding: 12px 14px; }\n  .mac-desc__compare-card--red { border-top: 3px solid #C8102E; }\n  .mac-desc__compare-card--navy { border-top: 3px solid #001F3F; }\n  .mac-desc__compare-title { font-family: 'Montserrat', sans-serif; font-size: 12px; font-weight: 700; color: #001F3F; margin-bottom: 8px; }\n  .mac-desc__compare-item { display: flex; align-items: flex-start; gap: 7px; margin-bottom: 5px; }\n  .mac-desc__compare-item:last-child { margin-bottom: 0; }\n  .mac-desc__compare-dot { font-size: 13px; font-weight: 700; flex-shrink: 0; line-height: 1.5; }\n  .mac-desc__compare-dot--red { color: #C8102E; }\n  .mac-desc__compare-dot--navy { color: #001F3F; }\n  .mac-desc__compare-text { font-size: 12.5px; color: #374151; font-family: 'Open Sans', sans-serif; line-height: 1.45; }\n\n  .mac-desc__specs { display: grid; grid-template-columns: repeat(auto-fill, minmax(160px, 1fr)); gap: 8px; margin-bottom: 20px; }\n  .mac-desc__spec { background: #F3F6F8; border: 1px solid #e2e8f0; border-radius: 5px; padding: 10px 12px; }\n  .mac-desc__spec-label { font-family: 'Montserrat', sans-serif; font-size: 10px; font-weight: 700; text-transform: uppercase; letter-spacing: 0.07em; color: #718096; margin-bottom: 3px; }\n  .mac-desc__spec-value { font-family: 'Montserrat', sans-serif; font-size: 12.5px; font-weight: 700; color: #001F3F; line-height: 1.35; }\n  .mac-desc__spec--highlight { background: #001F3F; border-color: #001F3F; }\n  .mac-desc__spec--highlight .mac-desc__spec-label { color: rgba(255,255,255,0.5); }\n  .mac-desc__spec--highlight .mac-desc__spec-value { color: #FFFFFF; }\n\n  .mac-desc__warranty { display: flex; align-items: center; gap: 10px; background: #001F3F; border-radius: 5px; padding: 12px 16px; }\n  .mac-desc__warranty-text { font-family: 'Montserrat', sans-serif; font-size: 13px; font-weight: 700; color: #FFFFFF; }\n  .mac-desc__warranty-sub { font-size: 12px; color: rgba(255,255,255,0.6); font-family: 'Open Sans', sans-serif; margin-top: 2px; }\n\n  @media (max-width: 480px) {\n    .mac-desc__compare { grid-template-columns: 1fr; }\n  }\n\u003c\/style\u003e\n\u003cdiv class=\"mac-desc\"\u003e\n\u003cp class=\"mac-desc__intro\"\u003eCSA-certified motorized fresh air damper that installs at the exterior wall penetration — hood and damper combined in one unit. No separate exterior hood required. One wall opening, one CSA-certified assembly, one control point. 24 Vac spring return, 4\"–9\", PO or PC action.\u003c\/p\u003e\n\u003cdiv class=\"mac-desc__bullets\"\u003e\n\u003cdiv class=\"mac-desc__bullet\"\u003e\n\u003cspan class=\"mac-desc__bullet-check\"\u003e✓\u003c\/span\u003e \u003cspan class=\"mac-desc__bullet-text\"\u003e\u003cstrong\u003eSeals at the building wall\u003c\/strong\u003e — no passive hood opening exposed to outdoor air between ventilation cycles; no cold air column sitting in the duct run\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"mac-desc__bullet\"\u003e\n\u003cspan class=\"mac-desc__bullet-check\"\u003e✓\u003c\/span\u003e \u003cspan class=\"mac-desc__bullet-text\"\u003e\u003cstrong\u003eOne unit replaces two\u003c\/strong\u003e — eliminates the separate exterior hood and inline damper that a standard HAC + OOH installation requires\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"mac-desc__bullet\"\u003e\n\u003cspan class=\"mac-desc__bullet-check\"\u003e✓\u003c\/span\u003e \u003cspan class=\"mac-desc__bullet-text\"\u003e\u003cstrong\u003eSame patented Hoyme spring motor drive\u003c\/strong\u003e — stall-protected, nylon bearings, engineered for freeze-thaw cycling and outdoor temperature exposure\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"mac-desc__bullet\"\u003e\n\u003cspan class=\"mac-desc__bullet-check\"\u003e✓\u003c\/span\u003e \u003cspan class=\"mac-desc__bullet-text\"\u003e\u003cstrong\u003eCSA certified — complete assembly\u003c\/strong\u003e — covers Canadian and US installations; not a certified actuator inside an uncertified enclosure\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"mac-desc__bullet\"\u003e\n\u003cspan class=\"mac-desc__bullet-check\"\u003e✓\u003c\/span\u003e \u003cspan class=\"mac-desc__bullet-text\"\u003e\u003cstrong\u003ePO or PC action, end switch and relay available\u003c\/strong\u003e — all factory-installed; specify at order, cannot be changed after installation\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"mac-desc__bullet\"\u003e\n\u003cspan class=\"mac-desc__bullet-check\"\u003e✓\u003c\/span\u003e \u003cspan class=\"mac-desc__bullet-text\"\u003e\u003cstrong\u003eMAC-L available\u003c\/strong\u003e — factory-insulated body for cold climate installs where condensation on the damper body is a concern; specify at order\u003c\/span\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"mac-desc__warning\"\u003e\n\u003cstrong\u003eConfirm PO vs. PC before ordering.\u003c\/strong\u003e The action is factory-set and cannot be changed after installation. Power Open (PO) is correct for the vast majority of fresh air intake and make-up air applications — the duct seals when the system is off. Power Close (PC) is used only when fail-open on power loss is required by the system design. An installed unit with the wrong action cannot be reversed in the field — replacement is the only correction.\u003c\/div\u003e\n\u003cdiv class=\"mac-desc__compare\"\u003e\n\u003cdiv class=\"mac-desc__compare-card mac-desc__compare-card--red\"\u003e\n\u003cdiv class=\"mac-desc__compare-title\"\u003eChoose MAC when…\u003c\/div\u003e\n\u003cdiv class=\"mac-desc__compare-item\"\u003e\n\u003cspan class=\"mac-desc__compare-dot mac-desc__compare-dot--red\"\u003e✓\u003c\/span\u003e\u003cspan class=\"mac-desc__compare-text\"\u003eDamper at the exterior wall penetration is preferred\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"mac-desc__compare-item\"\u003e\n\u003cspan class=\"mac-desc__compare-dot mac-desc__compare-dot--red\"\u003e✓\u003c\/span\u003e\u003cspan class=\"mac-desc__compare-text\"\u003eSingle unit covers both termination and control\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"mac-desc__compare-item\"\u003e\n\u003cspan class=\"mac-desc__compare-dot mac-desc__compare-dot--red\"\u003e✓\u003c\/span\u003e\u003cspan class=\"mac-desc__compare-text\"\u003eTightest possible exterior air seal is a priority\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"mac-desc__compare-item\"\u003e\n\u003cspan class=\"mac-desc__compare-dot mac-desc__compare-dot--red\"\u003e✓\u003c\/span\u003e\u003cspan class=\"mac-desc__compare-text\"\u003eRetrofit where adding a second interior unit is impractical\u003c\/span\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"mac-desc__compare-card mac-desc__compare-card--navy\"\u003e\n\u003cdiv class=\"mac-desc__compare-title\"\u003eChoose HAC + OOH when…\u003c\/div\u003e\n\u003cdiv class=\"mac-desc__compare-item\"\u003e\n\u003cspan class=\"mac-desc__compare-dot mac-desc__compare-dot--navy\"\u003e→\u003c\/span\u003e\u003cspan class=\"mac-desc__compare-text\"\u003eDamper needs to be in the duct run, accessible indoors\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"mac-desc__compare-item\"\u003e\n\u003cspan class=\"mac-desc__compare-dot mac-desc__compare-dot--navy\"\u003e→\u003c\/span\u003e\u003cspan class=\"mac-desc__compare-text\"\u003eSeparate exterior hood already part of the design\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"mac-desc__compare-item\"\u003e\n\u003cspan class=\"mac-desc__compare-dot mac-desc__compare-dot--navy\"\u003e→\u003c\/span\u003e\u003cspan class=\"mac-desc__compare-text\"\u003eSizes above 9\" required\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"mac-desc__compare-item\"\u003e\n\u003cspan class=\"mac-desc__compare-dot mac-desc__compare-dot--navy\"\u003e→\u003c\/span\u003e\u003cspan class=\"mac-desc__compare-text\"\u003eInterior control point preferred for new construction\u003c\/span\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"mac-desc__specs\"\u003e\n\u003cdiv class=\"mac-desc__spec mac-desc__spec--highlight\"\u003e\n\u003cdiv class=\"mac-desc__spec-label\"\u003eKey Advantage\u003c\/div\u003e\n\u003cdiv class=\"mac-desc__spec-value\"\u003eSeals at the wall — no open hood between cycles\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"mac-desc__spec\"\u003e\n\u003cdiv class=\"mac-desc__spec-label\"\u003eSizes\u003c\/div\u003e\n\u003cdiv class=\"mac-desc__spec-value\"\u003e4\"–9\"\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"mac-desc__spec\"\u003e\n\u003cdiv class=\"mac-desc__spec-label\"\u003eVoltage\u003c\/div\u003e\n\u003cdiv class=\"mac-desc__spec-value\"\u003e24 Vac\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"mac-desc__spec\"\u003e\n\u003cdiv class=\"mac-desc__spec-label\"\u003eAction\u003c\/div\u003e\n\u003cdiv class=\"mac-desc__spec-value\"\u003ePO or PC\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"mac-desc__spec\"\u003e\n\u003cdiv class=\"mac-desc__spec-label\"\u003eCertification\u003c\/div\u003e\n\u003cdiv class=\"mac-desc__spec-value\"\u003eCSA — complete assembly\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"mac-desc__spec\"\u003e\n\u003cdiv class=\"mac-desc__spec-label\"\u003eInsulated version\u003c\/div\u003e\n\u003cdiv class=\"mac-desc__spec-value\"\u003eMAC-L — specify at order\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"mac-desc__note\"\u003e\n\u003cstrong\u003eNeed an ADP relay adaptor?\u003c\/strong\u003e For ventilation code compliance — fresh air damper interlocked with furnace fan — the ADP-0241-S5A sequences the MAC open first, proves position via end switch, then energizes the furnace fan to prevent cold air dump. Order the SPO or SPC variant when using an ADP adaptor.\u003c\/div\u003e\n\u003cdiv class=\"mac-desc__warranty\"\u003e\n\u003csvg style=\"flex-shrink: 0;\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" fill=\"none\" viewbox=\"0 0 24 24\" height=\"20\" width=\"20\"\u003e\n      \u003cpath stroke-linejoin=\"round\" stroke-linecap=\"round\" stroke-width=\"1.8\" stroke=\"#C8102E\" d=\"M12 22s8-4 8-10V5l-8-3-8 3v7c0 6 8 10 8 10z\"\u003e\u003c\/path\u003e\n      \u003cpath stroke-linejoin=\"round\" stroke-linecap=\"round\" stroke-width=\"1.8\" stroke=\"#C8102E\" d=\"M9 12l2 2 4-4\"\u003e\u003c\/path\u003e\n    \u003c\/svg\u003e\n\u003cdiv\u003e\n\u003cdiv class=\"mac-desc__warranty-text\"\u003e2-year electrical  ·  10-year mechanical warranty\u003c\/div\u003e\n\u003cdiv class=\"mac-desc__warranty-sub\"\u003eMade in Canada  ·  40+ years field-proven in Canadian climates\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e","brand":"Hoyme Manufacturing","offers":[{"title":"4\" \/ Power Open (PO) \/ Standard (No Relay \/ No End Switch)","offer_id":43079204765739,"sku":"MAC-0410-OPO","price":223.0,"currency_code":"CAD","in_stock":true},{"title":"4\" \/ Power Open (PO) \/ End Switch (No Relay)","offer_id":43079204798507,"sku":"MAC-0410-SPO","price":257.0,"currency_code":"CAD","in_stock":true},{"title":"4\" \/ Power Open (PO) \/ Relay (No End Switch)","offer_id":43079208796203,"sku":"MAC-0411-OPO","price":273.0,"currency_code":"CAD","in_stock":true},{"title":"4\" \/ Power Open (PO) \/ Relay + End Switch","offer_id":43079208828971,"sku":"MAC-0411-SPO","price":298.0,"currency_code":"CAD","in_stock":true},{"title":"4\" \/ Power Close (PC) \/ Standard (No Relay \/ No End Switch)","offer_id":43079204831275,"sku":"MAC-0410-OPC","price":223.0,"currency_code":"CAD","in_stock":true},{"title":"4\" \/ Power Close (PC) \/ End Switch (No Relay)","offer_id":43079204864043,"sku":"MAC-0410-SPC","price":257.0,"currency_code":"CAD","in_stock":true},{"title":"4\" \/ Power Close (PC) \/ Relay (No End Switch)","offer_id":43079208861739,"sku":"MAC-0411-OPC","price":273.0,"currency_code":"CAD","in_stock":true},{"title":"4\" \/ Power Close (PC) \/ Relay + End Switch","offer_id":43079208894507,"sku":"MAC-0411-SPC","price":298.0,"currency_code":"CAD","in_stock":true},{"title":"5\" \/ Power Open (PO) \/ Standard (No Relay \/ No End Switch)","offer_id":43079204896811,"sku":"MAC-0510-OPO","price":228.0,"currency_code":"CAD","in_stock":true},{"title":"5\" \/ Power Open (PO) \/ End Switch (No Relay)","offer_id":43079204929579,"sku":"MAC-0510-SPO","price":261.0,"currency_code":"CAD","in_stock":true},{"title":"5\" \/ Power Open (PO) \/ Relay (No End Switch)","offer_id":43079208927275,"sku":"MAC-0511-OPO","price":276.0,"currency_code":"CAD","in_stock":true},{"title":"5\" \/ Power Open (PO) \/ Relay + End Switch","offer_id":43079208960043,"sku":"MAC-0511-SPO","price":300.0,"currency_code":"CAD","in_stock":true},{"title":"5\" \/ Power Close (PC) \/ Standard (No Relay \/ No End Switch)","offer_id":43079204962347,"sku":"MAC-0510-OPC","price":228.0,"currency_code":"CAD","in_stock":true},{"title":"5\" \/ Power Close (PC) \/ End Switch (No Relay)","offer_id":43079204995115,"sku":"MAC-0510-SPC","price":261.0,"currency_code":"CAD","in_stock":true},{"title":"5\" \/ Power Close (PC) \/ Relay (No End Switch)","offer_id":43079208992811,"sku":"MAC-0511-OPC","price":276.0,"currency_code":"CAD","in_stock":true},{"title":"5\" \/ Power Close (PC) \/ Relay + End Switch","offer_id":43079209025579,"sku":"MAC-0511-SPC","price":300.0,"currency_code":"CAD","in_stock":true},{"title":"6\" \/ Power Open (PO) \/ Standard (No Relay \/ No End Switch)","offer_id":43079205027883,"sku":"MAC-0610-OPO","price":231.0,"currency_code":"CAD","in_stock":true},{"title":"6\" \/ Power Open (PO) \/ End Switch (No Relay)","offer_id":43079205060651,"sku":"MAC-0610-SPO","price":265.0,"currency_code":"CAD","in_stock":true},{"title":"6\" \/ Power Open (PO) \/ Relay (No End Switch)","offer_id":43079209058347,"sku":"MAC-0611-OPO","price":282.0,"currency_code":"CAD","in_stock":true},{"title":"6\" \/ Power Open (PO) \/ Relay + End Switch","offer_id":43079209091115,"sku":"MAC-0611-SPO","price":305.0,"currency_code":"CAD","in_stock":true},{"title":"6\" \/ Power Close (PC) \/ Standard (No Relay \/ No End Switch)","offer_id":43079205093419,"sku":"MAC-0610-OPC","price":231.0,"currency_code":"CAD","in_stock":true},{"title":"6\" \/ Power Close (PC) \/ End Switch (No Relay)","offer_id":43079205126187,"sku":"MAC-0610-SPC","price":265.0,"currency_code":"CAD","in_stock":true},{"title":"6\" \/ Power Close (PC) \/ Relay (No End Switch)","offer_id":43079209123883,"sku":"MAC-0611-OPC","price":282.0,"currency_code":"CAD","in_stock":true},{"title":"6\" \/ Power Close (PC) \/ Relay + End Switch","offer_id":43079209156651,"sku":"MAC-0611-SPC","price":305.0,"currency_code":"CAD","in_stock":true},{"title":"7\" \/ Power Open (PO) \/ Standard (No Relay \/ No End Switch)","offer_id":43079205158955,"sku":"MAC-0710-OPO","price":234.0,"currency_code":"CAD","in_stock":true},{"title":"7\" \/ Power Open (PO) \/ End Switch (No Relay)","offer_id":43079205191723,"sku":"MAC-0710-SPO","price":270.0,"currency_code":"CAD","in_stock":true},{"title":"7\" \/ Power Open (PO) \/ Relay (No End Switch)","offer_id":43079209189419,"sku":"MAC-0711-OPO","price":286.0,"currency_code":"CAD","in_stock":true},{"title":"7\" \/ Power Open (PO) \/ Relay + End Switch","offer_id":43079209222187,"sku":"MAC-0711-SPO","price":311.0,"currency_code":"CAD","in_stock":true},{"title":"7\" \/ Power Close (PC) \/ Standard (No Relay \/ No End Switch)","offer_id":43079205224491,"sku":"MAC-0710-OPC","price":234.0,"currency_code":"CAD","in_stock":true},{"title":"7\" \/ Power Close (PC) \/ End Switch (No Relay)","offer_id":43079205257259,"sku":"MAC-0710-SPC","price":270.0,"currency_code":"CAD","in_stock":true},{"title":"7\" \/ Power Close (PC) \/ Relay (No End Switch)","offer_id":43079209254955,"sku":"MAC-0711-OPC","price":286.0,"currency_code":"CAD","in_stock":true},{"title":"7\" \/ Power Close (PC) \/ Relay + End Switch","offer_id":43079209287723,"sku":"MAC-0711-SPC","price":311.0,"currency_code":"CAD","in_stock":true},{"title":"8\" \/ Power Open (PO) \/ Standard (No Relay \/ No End Switch)","offer_id":43079205290027,"sku":"MAC-0810-OPO","price":242.0,"currency_code":"CAD","in_stock":true},{"title":"8\" \/ Power Open (PO) \/ End Switch (No Relay)","offer_id":43079205322795,"sku":"MAC-0810-SPO","price":274.0,"currency_code":"CAD","in_stock":true},{"title":"8\" \/ Power Open (PO) \/ Relay (No End Switch)","offer_id":43079209320491,"sku":"MAC-0811-OPO","price":293.0,"currency_code":"CAD","in_stock":true},{"title":"8\" \/ Power Open (PO) \/ Relay + End Switch","offer_id":43079209353259,"sku":"MAC-0811-SPO","price":319.0,"currency_code":"CAD","in_stock":true},{"title":"8\" \/ Power Close (PC) \/ Standard (No Relay \/ No End Switch)","offer_id":43079205355563,"sku":"MAC-0810-OPC","price":242.0,"currency_code":"CAD","in_stock":true},{"title":"8\" \/ Power Close (PC) \/ End Switch (No Relay)","offer_id":43079205388331,"sku":"MAC-0810-SPC","price":274.0,"currency_code":"CAD","in_stock":true},{"title":"8\" \/ Power Close (PC) \/ Relay (No End Switch)","offer_id":43079209386027,"sku":"MAC-0811-OPC","price":293.0,"currency_code":"CAD","in_stock":true},{"title":"8\" \/ Power Close (PC) \/ Relay + End Switch","offer_id":43079209418795,"sku":"MAC-0811-SPC","price":319.0,"currency_code":"CAD","in_stock":true},{"title":"9\" \/ Power Open (PO) \/ Standard (No Relay \/ No End Switch)","offer_id":43079205421099,"sku":"MAC-0910-OPO","price":248.0,"currency_code":"CAD","in_stock":true},{"title":"9\" \/ Power Open (PO) \/ End Switch (No Relay)","offer_id":43079205453867,"sku":"MAC-0910-SPO","price":282.0,"currency_code":"CAD","in_stock":true},{"title":"9\" \/ Power Open (PO) \/ Relay (No End Switch)","offer_id":43079209451563,"sku":"MAC-0911-OPO","price":298.0,"currency_code":"CAD","in_stock":true},{"title":"9\" \/ Power Open (PO) \/ Relay + End Switch","offer_id":43079209484331,"sku":"MAC-0911-SPO","price":325.0,"currency_code":"CAD","in_stock":true},{"title":"9\" \/ Power Close (PC) \/ Standard (No Relay \/ No End Switch)","offer_id":43079205486635,"sku":"MAC-0910-OPC","price":248.0,"currency_code":"CAD","in_stock":true},{"title":"9\" \/ Power Close (PC) \/ End Switch (No Relay)","offer_id":43079205519403,"sku":"MAC-0910-SPC","price":282.0,"currency_code":"CAD","in_stock":true},{"title":"9\" \/ Power Close (PC) \/ Relay (No End Switch)","offer_id":43079209517099,"sku":"MAC-0911-OPC","price":298.0,"currency_code":"CAD","in_stock":true},{"title":"9\" \/ Power Close (PC) \/ Relay + End Switch","offer_id":43079209549867,"sku":"MAC-0911-SPC","price":325.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0647\/3459\/3067\/files\/image_92.png?v=1775771567"},{"product_id":"hac-inline-motorized-air-damper-24vac","title":"HAC Universal Inline Air Control Damper — CSA Certified, 24 Vac, 2\"–9\", Spring Return","description":"\u003cp\u003e\u003cem\u003eProduct image is representative only. Actual product may differ in appearance depending on size, configuration, and options selected at order.\u003c\/em\u003e\u003c\/p\u003e\n\u003cstyle\u003e\n  .hac-desc * { box-sizing: border-box; margin: 0; padding: 0; }\n  .hac-desc { font-family: 'Open Sans', sans-serif; color: #001F3F; line-height: 1.6; font-size: 15px; }\n\n  .hac-desc__intro { font-size: 15px; line-height: 1.75; color: #374151; margin-bottom: 20px; }\n\n  .hac-desc__bullets { display: flex; flex-direction: column; gap: 6px; margin-bottom: 20px; }\n  .hac-desc__bullet { display: flex; align-items: flex-start; gap: 10px; }\n  .hac-desc__bullet-check { color: #C8102E; font-weight: 700; font-size: 14px; flex-shrink: 0; line-height: 1.6; }\n  .hac-desc__bullet-text { font-size: 14px; color: #374151; font-family: 'Open Sans', sans-serif; line-height: 1.6; }\n  .hac-desc__bullet-text strong { font-family: 'Montserrat', sans-serif; font-weight: 700; color: #001F3F; }\n\n  .hac-desc__warning { background: #fff3f4; border-left: 4px solid #C8102E; border-radius: 0 4px 4px 0; padding: 12px 16px; margin-bottom: 20px; font-size: 13.5px; color: #001F3F; font-family: 'Open Sans', sans-serif; line-height: 1.6; }\n  .hac-desc__warning strong { font-family: 'Montserrat', sans-serif; font-weight: 700; color: #C8102E; }\n\n  .hac-desc__note { background: #F3F6F8; border-left: 4px solid #001F3F; border-radius: 0 4px 4px 0; padding: 12px 16px; margin-bottom: 20px; font-size: 13.5px; color: #001F3F; font-family: 'Open Sans', sans-serif; line-height: 1.6; }\n  .hac-desc__note strong { font-family: 'Montserrat', sans-serif; font-weight: 700; }\n\n  .hac-desc__specs { display: grid; grid-template-columns: repeat(auto-fill, minmax(160px, 1fr)); gap: 8px; margin-bottom: 20px; }\n  .hac-desc__spec { background: #F3F6F8; border: 1px solid #e2e8f0; border-radius: 5px; padding: 10px 12px; }\n  .hac-desc__spec-label { font-family: 'Montserrat', sans-serif; font-size: 10px; font-weight: 700; text-transform: uppercase; letter-spacing: 0.07em; color: #718096; margin-bottom: 3px; }\n  .hac-desc__spec-value { font-family: 'Montserrat', sans-serif; font-size: 12.5px; font-weight: 700; color: #001F3F; line-height: 1.35; }\n\n  .hac-desc__warranty { display: flex; align-items: center; gap: 10px; background: #001F3F; border-radius: 5px; padding: 12px 16px; }\n  .hac-desc__warranty-text { font-family: 'Montserrat', sans-serif; font-size: 13px; font-weight: 700; color: #FFFFFF; }\n  .hac-desc__warranty-sub { font-size: 12px; color: rgba(255,255,255,0.6); font-family: 'Open Sans', sans-serif; margin-top: 2px; }\n\u003c\/style\u003e\n\u003cdiv class=\"hac-desc\"\u003e\n\u003cp class=\"hac-desc__intro\"\u003eThe most specified motorized inline damper in the Hoyme lineup. CSA-certified, 24 Vac, spring return, sizes 2\"–9\". Handles fresh air intake, make-up air, HRV\/ERV duct control, zone control, and ventilation code compliance installs across Canada and the US.\u003c\/p\u003e\n\u003cdiv class=\"hac-desc__bullets\"\u003e\n\u003cdiv class=\"hac-desc__bullet\"\u003e\n\u003cspan class=\"hac-desc__bullet-check\"\u003e✓\u003c\/span\u003e \u003cspan class=\"hac-desc__bullet-text\"\u003e\u003cstrong\u003eStall-protected motor\u003c\/strong\u003e — holds against ice and elevated static pressure without tripping or leaving the blade in an unknown position\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"hac-desc__bullet\"\u003e\n\u003cspan class=\"hac-desc__bullet-check\"\u003e✓\u003c\/span\u003e \u003cspan class=\"hac-desc__bullet-text\"\u003e\u003cstrong\u003eCSA certified — complete assembly\u003c\/strong\u003e — the damper body, drive, and control hardware together, not just the actuator\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"hac-desc__bullet\"\u003e\n\u003cspan class=\"hac-desc__bullet-check\"\u003e✓\u003c\/span\u003e \u003c!-- CORRECTION: Original said \"cannot be changed after installation.\" The Change PO\/PC instruction\n           document shows field conversion is possible via spring plate reversal, but it requires full\n           drive disassembly. Language updated to reflect the actual situation accurately. --\u003e \u003cspan class=\"hac-desc__bullet-text\"\u003e\u003cstrong\u003ePO or PC action\u003c\/strong\u003e — confirm before ordering; changing the action after installation requires full drive disassembly and is not practical once the unit is in a duct run\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"hac-desc__bullet\"\u003e\n\u003cspan class=\"hac-desc__bullet-check\"\u003e✓\u003c\/span\u003e \u003cspan class=\"hac-desc__bullet-text\"\u003e\u003cstrong\u003eEnd switch\u003c\/strong\u003e — confirms blade position; required for ADP relay adaptor interlock sequences\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"hac-desc__bullet\"\u003e\n\u003cspan class=\"hac-desc__bullet-check\"\u003e✓\u003c\/span\u003e \u003cspan class=\"hac-desc__bullet-text\"\u003e\u003cstrong\u003eRelay\u003c\/strong\u003e — switched output when damper opens; use to trigger furnace fan or secondary device (not available on 2\" and 3\")\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"hac-desc__bullet\"\u003e\n\u003cspan class=\"hac-desc__bullet-check\"\u003e✓\u003c\/span\u003e \u003cspan class=\"hac-desc__bullet-text\"\u003e\u003cstrong\u003eReplacement parts stocked\u003c\/strong\u003e — motor kits, microswitch kits, spring return kits at your wholesaler; a motor failure does not mean a full damper replacement\u003c\/span\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c!-- CORRECTION: Original said \"factory-set and cannot be changed after installation.\"\n       Updated to accurately reflect that field conversion exists but is impractical in a\n       duct run — consistent with the Change PO\/PC instruction document in the Technical Library. --\u003e\n\u003cdiv class=\"hac-desc__warning\"\u003e\n\u003cstrong\u003eConfirm PO vs. PC before ordering.\u003c\/strong\u003e The action is set at the factory. A field conversion procedure exists — it requires removing the motor, reversing the spring plate, and remounting the drive — but this is not practical once the unit is installed in a duct run. The only reliable correction after installation is replacement. PO is correct for the vast majority of fresh air intake and make-up air applications — the duct seals when the system is off. PC is used only when fail-open on power loss is required by the system design.\u003c\/div\u003e\n\u003cdiv class=\"hac-desc__specs\"\u003e\n\u003cdiv class=\"hac-desc__spec\"\u003e\n\u003cdiv class=\"hac-desc__spec-label\"\u003eSizes\u003c\/div\u003e\n\u003cdiv class=\"hac-desc__spec-value\"\u003e2\"–9\"\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"hac-desc__spec\"\u003e\n\u003cdiv class=\"hac-desc__spec-label\"\u003eVoltage\u003c\/div\u003e\n\u003cdiv class=\"hac-desc__spec-value\"\u003e24 Vac\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"hac-desc__spec\"\u003e\n\u003cdiv class=\"hac-desc__spec-label\"\u003eAction\u003c\/div\u003e\n\u003cdiv class=\"hac-desc__spec-value\"\u003ePO or PC\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"hac-desc__spec\"\u003e\n\u003cdiv class=\"hac-desc__spec-label\"\u003eCertification\u003c\/div\u003e\n\u003cdiv class=\"hac-desc__spec-value\"\u003eCSA — complete assembly\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"hac-desc__spec\"\u003e\n\u003cdiv class=\"hac-desc__spec-label\"\u003eDrive\u003c\/div\u003e\n\u003cdiv class=\"hac-desc__spec-value\"\u003ePatented Hoyme spring motor\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"hac-desc__spec\"\u003e\n\u003cdiv class=\"hac-desc__spec-label\"\u003eRelay available\u003c\/div\u003e\n\u003cdiv class=\"hac-desc__spec-value\"\u003e4\"–9\" only\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c!-- CORRECTION: Original cited ADP-0241-S5A. This model appears in the SharePoint source\n       document but is NOT listed in the 2026 price list — the closest listed model is\n       ADP-0241-05A. Until the correct model number is confirmed with the factory, the\n       specific model reference has been removed and replaced with a reference to the ADP\n       series listing, which covers all current models. Do not reinstate a specific model\n       number here until this is resolved. --\u003e\n\u003cdiv class=\"hac-desc__note\"\u003e\n\u003cstrong\u003eNeed an ADP relay adaptor?\u003c\/strong\u003e For ventilation code compliance — fresh air damper interlocked with furnace fan — the ADP relay adaptor sequences the HAC open first, proves position via end switch, then energizes the fan. Order the SPO or SPC variant when using an ADP adaptor. See the \u003ca href=\"\/products\/adp-damper-interlock-relay-adaptor\"\u003eADP series\u003c\/a\u003e for the correct model for your application.\u003c\/div\u003e\n\u003cdiv class=\"hac-desc__warranty\"\u003e\n\u003csvg width=\"20\" height=\"20\" viewbox=\"0 0 24 24\" fill=\"none\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" style=\"flex-shrink: 0;\"\u003e\n      \u003cpath d=\"M12 22s8-4 8-10V5l-8-3-8 3v7c0 6 8 10 8 10z\" stroke=\"#C8102E\" stroke-width=\"1.8\" stroke-linecap=\"round\" stroke-linejoin=\"round\"\u003e\u003c\/path\u003e\n      \u003cpath d=\"M9 12l2 2 4-4\" stroke=\"#C8102E\" stroke-width=\"1.8\" stroke-linecap=\"round\" stroke-linejoin=\"round\"\u003e\u003c\/path\u003e\n    \u003c\/svg\u003e\n\u003cdiv\u003e\n\u003cdiv class=\"hac-desc__warranty-text\"\u003e2-year electrical · 10-year mechanical warranty\u003c\/div\u003e\n\u003cdiv class=\"hac-desc__warranty-sub\"\u003eMade in Canada · 40+ years field-proven in Canadian climates\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e","brand":"Hoyme Manufacturing","offers":[{"title":"2\" \/ Power Open (PO) \/ Standard (No Relay \/ No End Switch)","offer_id":43079378468907,"sku":"HAC-0210-OPO","price":196.0,"currency_code":"CAD","in_stock":true},{"title":"2\" \/ Power Open (PO) \/ End Switch (No Relay)","offer_id":43079378501675,"sku":"HAC-0210-SPO","price":222.0,"currency_code":"CAD","in_stock":true},{"title":"2\" \/ Power Close (PC) \/ Standard (No Relay \/ No End Switch)","offer_id":43079378599979,"sku":"HAC-0210-OPC","price":196.0,"currency_code":"CAD","in_stock":true},{"title":"2\" \/ Power Close (PC) \/ End Switch (No Relay)","offer_id":43079378632747,"sku":"HAC-0210-SPC","price":222.0,"currency_code":"CAD","in_stock":true},{"title":"3\" \/ Power Open (PO) \/ Standard (No Relay \/ No End Switch)","offer_id":43079378731051,"sku":"HAC-0310-OPO","price":196.0,"currency_code":"CAD","in_stock":true},{"title":"3\" \/ Power Open (PO) \/ End Switch (No Relay)","offer_id":43079378763819,"sku":"HAC-0310-SPO","price":222.0,"currency_code":"CAD","in_stock":true},{"title":"3\" \/ Power Close (PC) \/ Standard (No Relay \/ No End Switch)","offer_id":43079378862123,"sku":"HAC-0310-OPC","price":196.0,"currency_code":"CAD","in_stock":true},{"title":"3\" \/ Power Close (PC) \/ End Switch (No Relay)","offer_id":43079378894891,"sku":"HAC-0310-SPC","price":222.0,"currency_code":"CAD","in_stock":true},{"title":"4\" \/ Power Open (PO) \/ Standard (No Relay \/ No End Switch)","offer_id":43079378993195,"sku":"HAC-0410-OPO","price":190.0,"currency_code":"CAD","in_stock":true},{"title":"4\" \/ Power Open (PO) \/ End Switch (No Relay)","offer_id":43079379025963,"sku":"HAC-0410-SPO","price":219.0,"currency_code":"CAD","in_stock":true},{"title":"4\" \/ Power Open (PO) \/ Relay (No End Switch)","offer_id":43079379058731,"sku":"HAC-0411-OPO","price":237.0,"currency_code":"CAD","in_stock":true},{"title":"4\" \/ Power Open (PO) \/ Realy + End 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Relay)","offer_id":43079379288107,"sku":"HAC-0510-SPO","price":220.0,"currency_code":"CAD","in_stock":true},{"title":"5\" \/ Power Open (PO) \/ Relay (No End Switch)","offer_id":43079379320875,"sku":"HAC-0511-OPO","price":240.0,"currency_code":"CAD","in_stock":true},{"title":"5\" \/ Power Open (PO) \/ Realy + End Switch","offer_id":43079379353643,"sku":"HAC-0511-SPO","price":268.0,"currency_code":"CAD","in_stock":true},{"title":"5\" \/ Power Close (PC) \/ Standard (No Relay \/ No End Switch)","offer_id":43079379386411,"sku":"HAC-0510-OPC","price":193.0,"currency_code":"CAD","in_stock":true},{"title":"5\" \/ Power Close (PC) \/ End Switch (No Relay)","offer_id":43079379419179,"sku":"HAC-0510-SPC","price":220.0,"currency_code":"CAD","in_stock":true},{"title":"5\" \/ Power Close (PC) \/ Relay (No End Switch)","offer_id":43079379451947,"sku":"HAC-0511-OPC","price":240.0,"currency_code":"CAD","in_stock":true},{"title":"5\" \/ Power Close (PC) \/ Realy + End 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Relay)","offer_id":43079379681323,"sku":"HAC-0610-SPC","price":222.0,"currency_code":"CAD","in_stock":true},{"title":"6\" \/ Power Close (PC) \/ Relay (No End Switch)","offer_id":43079379714091,"sku":"HAC-0611-OPC","price":243.0,"currency_code":"CAD","in_stock":true},{"title":"6\" \/ Power Close (PC) \/ Realy + End Switch","offer_id":43079379746859,"sku":"HAC-0611-SPC","price":272.0,"currency_code":"CAD","in_stock":true},{"title":"7\" \/ Power Open (PO) \/ Standard (No Relay \/ No End Switch)","offer_id":43079379779627,"sku":"HAC-0710-OPO","price":196.0,"currency_code":"CAD","in_stock":true},{"title":"7\" \/ Power Open (PO) \/ End Switch (No Relay)","offer_id":43079379812395,"sku":"HAC-0710-SPO","price":223.0,"currency_code":"CAD","in_stock":true},{"title":"7\" \/ Power Open (PO) \/ Relay (No End Switch)","offer_id":43079379845163,"sku":"HAC-0711-OPO","price":244.0,"currency_code":"CAD","in_stock":true},{"title":"7\" \/ Power Open (PO) \/ Realy + End Switch","offer_id":43079379877931,"sku":"HAC-0711-SPO","price":273.0,"currency_code":"CAD","in_stock":true},{"title":"7\" \/ Power Close (PC) \/ Standard (No Relay \/ No End Switch)","offer_id":43079379910699,"sku":"HAC-0710-OPC","price":196.0,"currency_code":"CAD","in_stock":true},{"title":"7\" \/ Power Close (PC) \/ End Switch (No Relay)","offer_id":43079379943467,"sku":"HAC-0710-SPC","price":223.0,"currency_code":"CAD","in_stock":true},{"title":"7\" \/ Power Close (PC) \/ Relay (No End Switch)","offer_id":43079379976235,"sku":"HAC-0711-OPC","price":244.0,"currency_code":"CAD","in_stock":true},{"title":"7\" \/ Power Close (PC) \/ Realy + End Switch","offer_id":43079380009003,"sku":"HAC-0711-SPC","price":273.0,"currency_code":"CAD","in_stock":true},{"title":"8\" \/ Power Open (PO) \/ Standard (No Relay \/ No End Switch)","offer_id":43079380041771,"sku":"HAC-0810-OPO","price":199.0,"currency_code":"CAD","in_stock":true},{"title":"8\" \/ Power Open (PO) \/ End Switch (No Relay)","offer_id":43079380074539,"sku":"HAC-0810-SPO","price":224.0,"currency_code":"CAD","in_stock":true},{"title":"8\" \/ Power Open (PO) \/ Relay (No End Switch)","offer_id":43079380107307,"sku":"HAC-0811-OPO","price":246.0,"currency_code":"CAD","in_stock":true},{"title":"8\" \/ Power Open (PO) \/ Realy + End Switch","offer_id":43079380140075,"sku":"HAC-0811-SPO","price":276.0,"currency_code":"CAD","in_stock":true},{"title":"8\" \/ Power Close (PC) \/ Standard (No Relay \/ No End Switch)","offer_id":43079380172843,"sku":"HAC-0810-OPC","price":199.0,"currency_code":"CAD","in_stock":true},{"title":"8\" \/ Power Close (PC) \/ End Switch (No Relay)","offer_id":43079380205611,"sku":"HAC-0810-SPC","price":224.0,"currency_code":"CAD","in_stock":true},{"title":"8\" \/ Power Close (PC) \/ Relay (No End Switch)","offer_id":43079380238379,"sku":"HAC-0811-OPC","price":246.0,"currency_code":"CAD","in_stock":true},{"title":"8\" \/ Power Close (PC) \/ Realy + End Switch","offer_id":43079380271147,"sku":"HAC-0811-SPC","price":276.0,"currency_code":"CAD","in_stock":true},{"title":"9\" \/ Power Open (PO) \/ Standard (No Relay \/ No End Switch)","offer_id":43079380303915,"sku":"HAC-0910-OPO","price":204.0,"currency_code":"CAD","in_stock":true},{"title":"9\" \/ Power Open (PO) \/ End Switch (No Relay)","offer_id":43079380336683,"sku":"HAC-0910-SPO","price":230.0,"currency_code":"CAD","in_stock":true},{"title":"9\" \/ Power Open (PO) \/ Relay (No End Switch)","offer_id":43079380369451,"sku":"HAC-0911-OPO","price":251.0,"currency_code":"CAD","in_stock":true},{"title":"9\" \/ Power Open (PO) \/ Realy + End Switch","offer_id":43079380402219,"sku":"HAC-0911-SPO","price":278.0,"currency_code":"CAD","in_stock":true},{"title":"9\" \/ Power Close (PC) \/ Standard (No Relay \/ No End Switch)","offer_id":43079380434987,"sku":"HAC-0910-OPC","price":204.0,"currency_code":"CAD","in_stock":true},{"title":"9\" \/ Power Close (PC) \/ End Switch (No Relay)","offer_id":43079380467755,"sku":"HAC-0910-SPC","price":230.0,"currency_code":"CAD","in_stock":true},{"title":"9\" \/ Power Close (PC) \/ Relay (No End Switch)","offer_id":43079380500523,"sku":"HAC-0911-OPC","price":251.0,"currency_code":"CAD","in_stock":true},{"title":"9\" \/ Power Close (PC) \/ Realy + End Switch","offer_id":43079380533291,"sku":"HAC-0911-SPC","price":278.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0647\/3459\/3067\/files\/image_90.png?v=1775771249"},{"product_id":"hac-12l-insulated-inline-damper-120vac","title":"HAC-L Insulated Inline Fresh Air Damper — CSA Certified, 24 Vac, 2\"–9\", Factory-Insulated Body","description":"\u003cp\u003e\u003cem\u003eProduct image is representative only. Actual product may differ in appearance depending on size, configuration, and options selected at order.\u003c\/em\u003e\u003c\/p\u003e\n\u003cstyle\u003e\n  .hacl-desc * { box-sizing: border-box; margin: 0; padding: 0; }\n  .hacl-desc { font-family: 'Open Sans', sans-serif; color: #001F3F; line-height: 1.6; font-size: 15px; }\n\n  .hacl-desc__intro { font-size: 15px; line-height: 1.75; color: #374151; margin-bottom: 20px; }\n\n  .hacl-desc__bullets { display: flex; flex-direction: column; gap: 6px; margin-bottom: 20px; }\n  .hacl-desc__bullet { display: flex; align-items: flex-start; gap: 10px; }\n  .hacl-desc__bullet-check { color: #C8102E; font-weight: 700; font-size: 14px; flex-shrink: 0; line-height: 1.6; }\n  .hacl-desc__bullet-text { font-size: 14px; color: #374151; font-family: 'Open Sans', sans-serif; line-height: 1.6; }\n  .hacl-desc__bullet-text strong { font-family: 'Montserrat', sans-serif; font-weight: 700; color: #001F3F; }\n\n  .hacl-desc__warning { background: #fff3f4; border-left: 4px solid #C8102E; border-radius: 0 4px 4px 0; padding: 12px 16px; margin-bottom: 20px; font-size: 13.5px; color: #001F3F; font-family: 'Open Sans', sans-serif; line-height: 1.6; }\n  .hacl-desc__warning strong { font-family: 'Montserrat', sans-serif; font-weight: 700; color: #C8102E; }\n\n  .hacl-desc__note { background: #F3F6F8; border-left: 4px solid #001F3F; border-radius: 0 4px 4px 0; padding: 12px 16px; margin-bottom: 20px; font-size: 13.5px; color: #001F3F; font-family: 'Open Sans', sans-serif; line-height: 1.6; }\n  .hacl-desc__note strong { font-family: 'Montserrat', sans-serif; font-weight: 700; }\n\n  .hacl-desc__specs { display: grid; grid-template-columns: repeat(auto-fill, minmax(160px, 1fr)); gap: 8px; margin-bottom: 20px; }\n  .hacl-desc__spec { background: #F3F6F8; border: 1px solid #e2e8f0; border-radius: 5px; padding: 10px 12px; }\n  .hacl-desc__spec-label { font-family: 'Montserrat', sans-serif; font-size: 10px; font-weight: 700; text-transform: uppercase; letter-spacing: 0.07em; color: #718096; margin-bottom: 3px; }\n  .hacl-desc__spec-value { font-family: 'Montserrat', sans-serif; font-size: 12.5px; font-weight: 700; color: #001F3F; line-height: 1.35; }\n  .hacl-desc__spec--highlight { background: #001F3F; border-color: #001F3F; }\n  .hacl-desc__spec--highlight .hacl-desc__spec-label { color: rgba(255,255,255,0.5); }\n  .hacl-desc__spec--highlight .hacl-desc__spec-value { color: #FFFFFF; }\n\n  .hacl-desc__warranty { display: flex; align-items: center; gap: 10px; background: #001F3F; border-radius: 5px; padding: 12px 16px; }\n  .hacl-desc__warranty-text { font-family: 'Montserrat', sans-serif; font-size: 13px; font-weight: 700; color: #FFFFFF; }\n  .hacl-desc__warranty-sub { font-size: 12px; color: rgba(255,255,255,0.6); font-family: 'Open Sans', sans-serif; margin-top: 2px; }\n\u003c\/style\u003e\n\u003cdiv class=\"hacl-desc\"\u003e\n\u003cp class=\"hacl-desc__intro\"\u003eFactory-insulated motorized inline fresh air damper for cold climate installations — unconditioned spaces, crawlspaces, or any location where the damper body is exposed to temperatures that cause condensation. Same patented Hoyme drive as the standard HAC. CSA certified. Sizes 2\"–9\".\u003c\/p\u003e\n\u003cdiv class=\"hacl-desc__bullets\"\u003e\n\u003cdiv class=\"hacl-desc__bullet\"\u003e\n\u003cspan class=\"hacl-desc__bullet-check\"\u003e✓\u003c\/span\u003e \u003cspan class=\"hacl-desc__bullet-text\"\u003e\u003cstrong\u003eFactory insulation — applied before assembly\u003c\/strong\u003e — covers the actuator housing, motor lead exits, and collar joint where field-wrapping fails first\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"hacl-desc__bullet\"\u003e\n\u003cspan class=\"hacl-desc__bullet-check\"\u003e✓\u003c\/span\u003e \u003cspan class=\"hacl-desc__bullet-text\"\u003e\u003cstrong\u003eSame drive as standard HAC\u003c\/strong\u003e — patented Hoyme 24 Vac spring return, stall-protected, nylon bearings, CSA certified complete assembly\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"hacl-desc__bullet\"\u003e\n\u003cspan class=\"hacl-desc__bullet-check\"\u003e✓\u003c\/span\u003e \u003c!-- CORRECTION: Consistent with HAC rewrite. Source says \"cannot be changed after\n           installation\" but the Change PO\/PC instruction document shows field conversion\n           is possible via spring plate reversal. Language updated to reflect the actual\n           situation — conversion requires full drive disassembly and is not practical\n           once the unit is installed in a duct run. --\u003e \u003cspan class=\"hacl-desc__bullet-text\"\u003e\u003cstrong\u003ePO or PC action\u003c\/strong\u003e — confirm before ordering; changing the action after installation requires full drive disassembly and is not practical once the unit is in a duct run\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"hacl-desc__bullet\"\u003e\n\u003cspan class=\"hacl-desc__bullet-check\"\u003e✓\u003c\/span\u003e \u003cspan class=\"hacl-desc__bullet-text\"\u003e\u003cstrong\u003eEnd switch and relay available\u003c\/strong\u003e — same options as standard HAC; relay not available on 2\" and 3\"\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"hacl-desc__bullet\"\u003e\n\u003cspan class=\"hacl-desc__bullet-check\"\u003e✓\u003c\/span\u003e \u003cspan class=\"hacl-desc__bullet-text\"\u003e\u003cstrong\u003eReplacement parts stocked\u003c\/strong\u003e — motor kits, microswitch kits, spring return kits at your wholesaler\u003c\/span\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"hacl-desc__warning\"\u003e\n\u003cstrong\u003eThe HAC-L insulates the damper body only.\u003c\/strong\u003e The duct run from the exterior penetration to the HAC-L still requires insulation per code. If the damper is in conditioned mechanical space with no condensation risk, the standard HAC is sufficient and less expensive.\u003c\/div\u003e\n\u003cdiv class=\"hacl-desc__specs\"\u003e\n\u003cdiv class=\"hacl-desc__spec hacl-desc__spec--highlight\"\u003e\n\u003cdiv class=\"hacl-desc__spec-label\"\u003eInsulation\u003c\/div\u003e\n\u003cdiv class=\"hacl-desc__spec-value\"\u003eFactory — not field-wrapped\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"hacl-desc__spec\"\u003e\n\u003cdiv class=\"hacl-desc__spec-label\"\u003eSizes\u003c\/div\u003e\n\u003cdiv class=\"hacl-desc__spec-value\"\u003e2\"–9\"\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"hacl-desc__spec\"\u003e\n\u003cdiv class=\"hacl-desc__spec-label\"\u003eVoltage\u003c\/div\u003e\n\u003cdiv class=\"hacl-desc__spec-value\"\u003e24 Vac\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"hacl-desc__spec\"\u003e\n\u003cdiv class=\"hacl-desc__spec-label\"\u003eAction\u003c\/div\u003e\n\u003cdiv class=\"hacl-desc__spec-value\"\u003ePO or PC\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"hacl-desc__spec\"\u003e\n\u003cdiv class=\"hacl-desc__spec-label\"\u003eCertification\u003c\/div\u003e\n\u003cdiv class=\"hacl-desc__spec-value\"\u003eCSA — complete assembly\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"hacl-desc__spec\"\u003e\n\u003cdiv class=\"hacl-desc__spec-label\"\u003e120 Vac version\u003c\/div\u003e\n\u003cdiv class=\"hacl-desc__spec-value\"\u003eSee HAC-12L\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c!-- CORRECTION: Consistent with HAC rewrite. ADP-0241-S5A appears in the SharePoint\n       source document but is not listed in the 2026 price list. Specific model reference\n       removed pending factory verification. Do not reinstate until confirmed. --\u003e\n\u003cdiv class=\"hacl-desc__note\"\u003e\n\u003cstrong\u003eNeed an ADP relay adaptor?\u003c\/strong\u003e For ventilation code compliance — fresh air damper interlocked with furnace fan — the ADP relay adaptor sequences the HAC-L open first, proves position via end switch, then energizes the fan. Order the SPO or SPC variant when using an ADP adaptor. See the \u003ca href=\"\/products\/adp-damper-interlock-relay-adaptor\"\u003eADP series\u003c\/a\u003e for the correct model for your application.\u003c\/div\u003e\n\u003cdiv class=\"hacl-desc__warranty\"\u003e\n\u003csvg style=\"flex-shrink: 0;\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" fill=\"none\" viewbox=\"0 0 24 24\" height=\"20\" width=\"20\"\u003e\n      \u003cpath stroke-linejoin=\"round\" stroke-linecap=\"round\" stroke-width=\"1.8\" stroke=\"#C8102E\" d=\"M12 22s8-4 8-10V5l-8-3-8 3v7c0 6 8 10 8 10z\"\u003e\u003c\/path\u003e\n      \u003cpath stroke-linejoin=\"round\" stroke-linecap=\"round\" stroke-width=\"1.8\" stroke=\"#C8102E\" d=\"M9 12l2 2 4-4\"\u003e\u003c\/path\u003e\n    \u003c\/svg\u003e\n\u003cdiv\u003e\n\u003cdiv class=\"hacl-desc__warranty-text\"\u003e2-year electrical · 10-year mechanical warranty\u003c\/div\u003e\n\u003cdiv class=\"hacl-desc__warranty-sub\"\u003eMade in Canada · Built for Canadian winters\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e","brand":"Hoyme Manufacturing","offers":[{"title":"2\" \/ Power Open (PO) \/ Standard (No Relay \/ No End Switch)","offer_id":43080244559915,"sku":"HAC-0210-OPO-L","price":204.0,"currency_code":"CAD","in_stock":true},{"title":"2\" \/ Power Open (PO) \/ End Switch (No Relay)","offer_id":43080244592683,"sku":"HAC-0210-SPO-L","price":231.0,"currency_code":"CAD","in_stock":true},{"title":"2\" \/ Power Close (PC) \/ Standard (No Relay \/ No End Switch)","offer_id":43080244690987,"sku":"HAC-0210-OPC-L","price":204.0,"currency_code":"CAD","in_stock":true},{"title":"2\" \/ Power Close (PC) \/ End Switch (No Relay)","offer_id":43080244723755,"sku":"HAC-0210-SPC-L","price":231.0,"currency_code":"CAD","in_stock":true},{"title":"3\" \/ Power Open (PO) \/ Standard (No Relay \/ No End Switch)","offer_id":43080244822059,"sku":"HAC-0310-OPO-L","price":204.0,"currency_code":"CAD","in_stock":true},{"title":"3\" \/ Power Open (PO) \/ End Switch (No Relay)","offer_id":43080244854827,"sku":"HAC-0310-SPO-L","price":231.0,"currency_code":"CAD","in_stock":true},{"title":"3\" \/ Power Close (PC) \/ Standard (No Relay \/ No End Switch)","offer_id":43080244953131,"sku":"HAC-0310-OPC-L","price":204.0,"currency_code":"CAD","in_stock":true},{"title":"3\" \/ Power Close (PC) \/ End Switch (No Relay)","offer_id":43080244985899,"sku":"HAC-0310-SPC-L","price":231.0,"currency_code":"CAD","in_stock":true},{"title":"4\" \/ Power Open (PO) \/ Standard (No Relay \/ No End Switch)","offer_id":43080245084203,"sku":"HAC-0410-OPO-L","price":199.0,"currency_code":"CAD","in_stock":true},{"title":"4\" \/ Power Open (PO) \/ End Switch (No Relay)","offer_id":43080245116971,"sku":"HAC-0410-SPO-L","price":224.0,"currency_code":"CAD","in_stock":true},{"title":"4\" \/ Power Open (PO) \/ Relay (No End Switch)","offer_id":43080245149739,"sku":"HAC-0411-OPO-L","price":246.0,"currency_code":"CAD","in_stock":true},{"title":"4\" \/ Power Open (PO) \/ Relay + End Switch","offer_id":43080245182507,"sku":"HAC-0411-SPO-L","price":274.0,"currency_code":"CAD","in_stock":true},{"title":"4\" \/ Power Close (PC) \/ Standard (No Relay \/ No End Switch)","offer_id":43080245215275,"sku":"HAC-0410-OPC-L","price":199.0,"currency_code":"CAD","in_stock":true},{"title":"4\" \/ Power Close (PC) \/ End Switch (No Relay)","offer_id":43080245248043,"sku":"HAC-0410-SPC-L","price":224.0,"currency_code":"CAD","in_stock":true},{"title":"4\" \/ Power Close (PC) \/ Relay (No End Switch)","offer_id":43080245280811,"sku":"HAC-0411-OPC-L","price":246.0,"currency_code":"CAD","in_stock":true},{"title":"4\" \/ Power Close (PC) \/ Relay + End Switch","offer_id":43080245313579,"sku":"HAC-0411-SPC-L","price":274.0,"currency_code":"CAD","in_stock":true},{"title":"5\" \/ Power Open (PO) \/ Standard (No Relay \/ No End Switch)","offer_id":43080245346347,"sku":"HAC-0510-OPO-L","price":201.0,"currency_code":"CAD","in_stock":true},{"title":"5\" \/ Power Open (PO) \/ End Switch (No Relay)","offer_id":43080245379115,"sku":"HAC-0510-SPO-L","price":228.0,"currency_code":"CAD","in_stock":true},{"title":"5\" \/ Power Open (PO) \/ Relay (No End Switch)","offer_id":43080245411883,"sku":"HAC-0511-OPO-L","price":249.0,"currency_code":"CAD","in_stock":true},{"title":"5\" \/ Power Open (PO) \/ Relay + End Switch","offer_id":43080245444651,"sku":"HAC-0511-SPO-L","price":276.0,"currency_code":"CAD","in_stock":true},{"title":"5\" \/ Power Close (PC) \/ Standard (No Relay \/ No End Switch)","offer_id":43080245477419,"sku":"HAC-0510-OPC-L","price":201.0,"currency_code":"CAD","in_stock":true},{"title":"5\" \/ Power Close (PC) \/ End Switch (No Relay)","offer_id":43080245510187,"sku":"HAC-0510-SPC-L","price":228.0,"currency_code":"CAD","in_stock":true},{"title":"5\" \/ Power Close (PC) \/ Relay (No End Switch)","offer_id":43080245542955,"sku":"HAC-0511-OPC-L","price":249.0,"currency_code":"CAD","in_stock":true},{"title":"5\" \/ Power Close (PC) \/ Relay + End Switch","offer_id":43080245575723,"sku":"HAC-0511-SPC-L","price":276.0,"currency_code":"CAD","in_stock":true},{"title":"6\" \/ Power Open (PO) \/ Standard (No Relay \/ No End Switch)","offer_id":43080245608491,"sku":"HAC-0610-OPO-L","price":204.0,"currency_code":"CAD","in_stock":true},{"title":"6\" \/ Power Open (PO) \/ End Switch (No Relay)","offer_id":43080245641259,"sku":"HAC-0610-SPO-L","price":230.0,"currency_code":"CAD","in_stock":true},{"title":"6\" \/ Power Open (PO) \/ Relay (No End Switch)","offer_id":43080245674027,"sku":"HAC-0611-OPO-L","price":251.0,"currency_code":"CAD","in_stock":true},{"title":"6\" \/ Power Open (PO) \/ Relay + End Switch","offer_id":43080245706795,"sku":"HAC-0611-SPO-L","price":278.0,"currency_code":"CAD","in_stock":true},{"title":"6\" \/ Power Close (PC) \/ Standard (No Relay \/ No End Switch)","offer_id":43080245739563,"sku":"HAC-0610-OPC-L","price":204.0,"currency_code":"CAD","in_stock":true},{"title":"6\" \/ Power Close (PC) \/ End Switch (No Relay)","offer_id":43080245772331,"sku":"HAC-0610-SPC-L","price":230.0,"currency_code":"CAD","in_stock":true},{"title":"6\" \/ Power Close (PC) \/ Relay (No End Switch)","offer_id":43080245805099,"sku":"HAC-0611-OPC-L","price":251.0,"currency_code":"CAD","in_stock":true},{"title":"6\" \/ Power Close (PC) \/ Relay + End Switch","offer_id":43080245837867,"sku":"HAC-0611-SPC-L","price":278.0,"currency_code":"CAD","in_stock":true},{"title":"7\" \/ Power Open (PO) \/ Standard (No Relay \/ No End Switch)","offer_id":43080245870635,"sku":"HAC-0710-OPO-L","price":205.0,"currency_code":"CAD","in_stock":true},{"title":"7\" \/ Power Open (PO) \/ End Switch (No Relay)","offer_id":43080245903403,"sku":"HAC-0710-SPO-L","price":231.0,"currency_code":"CAD","in_stock":true},{"title":"7\" \/ Power Open (PO) \/ Relay (No End Switch)","offer_id":43080245936171,"sku":"HAC-0711-OPO-L","price":252.0,"currency_code":"CAD","in_stock":true},{"title":"7\" \/ Power Open (PO) \/ Relay + End Switch","offer_id":43080245968939,"sku":"HAC-0711-SPO-L","price":279.0,"currency_code":"CAD","in_stock":true},{"title":"7\" \/ Power Close (PC) \/ Standard (No Relay \/ No End Switch)","offer_id":43080246001707,"sku":"HAC-0710-OPC-L","price":205.0,"currency_code":"CAD","in_stock":true},{"title":"7\" \/ Power Close (PC) \/ End Switch (No Relay)","offer_id":43080246034475,"sku":"HAC-0710-SPC-L","price":231.0,"currency_code":"CAD","in_stock":true},{"title":"7\" \/ Power Close (PC) \/ Relay (No End Switch)","offer_id":43080246067243,"sku":"HAC-0711-OPC-L","price":252.0,"currency_code":"CAD","in_stock":true},{"title":"7\" \/ Power Close (PC) \/ Relay + End Switch","offer_id":43080246100011,"sku":"HAC-0711-SPC-L","price":279.0,"currency_code":"CAD","in_stock":true},{"title":"8\" \/ Power Open (PO) \/ Standard (No Relay \/ No End Switch)","offer_id":43080246132779,"sku":"HAC-0810-OPO-L","price":206.0,"currency_code":"CAD","in_stock":true},{"title":"8\" \/ Power Open (PO) \/ End Switch (No Relay)","offer_id":43080246165547,"sku":"HAC-0810-SPO-L","price":233.0,"currency_code":"CAD","in_stock":true},{"title":"8\" \/ Power Open (PO) \/ Relay (No End Switch)","offer_id":43080246198315,"sku":"HAC-0811-OPO-L","price":255.0,"currency_code":"CAD","in_stock":true},{"title":"8\" \/ Power Open (PO) \/ Relay + End Switch","offer_id":43080246231083,"sku":"HAC-0811-SPO-L","price":282.0,"currency_code":"CAD","in_stock":true},{"title":"8\" \/ Power Close (PC) \/ Standard (No Relay \/ No End Switch)","offer_id":43080246263851,"sku":"HAC-0810-OPC-L","price":206.0,"currency_code":"CAD","in_stock":true},{"title":"8\" \/ Power Close (PC) \/ End Switch (No Relay)","offer_id":43080246296619,"sku":"HAC-0810-SPC-L","price":233.0,"currency_code":"CAD","in_stock":true},{"title":"8\" \/ Power Close (PC) \/ Relay (No End Switch)","offer_id":43080246329387,"sku":"HAC-0811-OPC-L","price":255.0,"currency_code":"CAD","in_stock":true},{"title":"8\" \/ Power Close (PC) \/ Relay + End Switch","offer_id":43080246362155,"sku":"HAC-0811-SPC-L","price":282.0,"currency_code":"CAD","in_stock":true},{"title":"9\" \/ Power Open (PO) \/ Standard (No Relay \/ No End Switch)","offer_id":43080246394923,"sku":"HAC-0910-OPO-L","price":209.0,"currency_code":"CAD","in_stock":true},{"title":"9\" \/ Power Open (PO) \/ End Switch (No Relay)","offer_id":43080246427691,"sku":"HAC-0910-SPO-L","price":237.0,"currency_code":"CAD","in_stock":true},{"title":"9\" \/ Power Open (PO) \/ Relay (No End Switch)","offer_id":43080246460459,"sku":"HAC-0911-OPO-L","price":258.0,"currency_code":"CAD","in_stock":true},{"title":"9\" \/ Power Open (PO) \/ Relay + End Switch","offer_id":43080246493227,"sku":"HAC-0911-SPO-L","price":287.0,"currency_code":"CAD","in_stock":true},{"title":"9\" \/ Power Close (PC) \/ Standard (No Relay \/ No End Switch)","offer_id":43080246525995,"sku":"HAC-0910-OPC-L","price":209.0,"currency_code":"CAD","in_stock":true},{"title":"9\" \/ Power Close (PC) \/ End Switch (No Relay)","offer_id":43080246558763,"sku":"HAC-0910-SPC-L","price":237.0,"currency_code":"CAD","in_stock":true},{"title":"9\" \/ Power Close (PC) \/ Relay (No End Switch)","offer_id":43080246591531,"sku":"HAC-0911-OPC-L","price":258.0,"currency_code":"CAD","in_stock":true},{"title":"9\" \/ Power Close (PC) \/ Relay + End Switch","offer_id":43080246624299,"sku":"HAC-0911-SPC-L","price":287.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0647\/3459\/3067\/files\/Hoyme-HAC-insulated.jpg?v=1771138872"},{"product_id":"hac-h-heat-bypass-inline-damper-24vac","title":"HAC-H Heat Inline Damper — CSA Certified, 24 Vac, 2\"–9\", 10% Heat Bypass","description":"\u003cp\u003e\u003cem\u003eProduct image is representative only. Actual product may differ in appearance depending on size, configuration, and options selected at order.\u003c\/em\u003e\u003c\/p\u003e\n\u003cstyle\u003e\n  .hach-desc * { box-sizing: border-box; margin: 0; padding: 0; }\n  .hach-desc { font-family: 'Open Sans', sans-serif; color: #001F3F; line-height: 1.6; font-size: 15px; }\n\n  .hach-desc__intro { font-size: 15px; line-height: 1.75; color: #374151; margin-bottom: 20px; }\n\n  .hach-desc__bullets { display: flex; flex-direction: column; gap: 6px; margin-bottom: 20px; }\n  .hach-desc__bullet { display: flex; align-items: flex-start; gap: 10px; }\n  .hach-desc__bullet-check { color: #C8102E; font-weight: 700; font-size: 14px; flex-shrink: 0; line-height: 1.6; }\n  .hach-desc__bullet-text { font-size: 14px; color: #374151; font-family: 'Open Sans', sans-serif; line-height: 1.6; }\n  .hach-desc__bullet-text strong { font-family: 'Montserrat', sans-serif; font-weight: 700; color: #001F3F; }\n\n  .hach-desc__critical { background: #fff3f4; border-left: 4px solid #C8102E; border-radius: 0 4px 4px 0; padding: 12px 16px; margin-bottom: 20px; font-size: 13.5px; color: #001F3F; font-family: 'Open Sans', sans-serif; line-height: 1.6; }\n  .hach-desc__critical strong { font-family: 'Montserrat', sans-serif; font-weight: 700; color: #C8102E; }\n\n  .hach-desc__warning { background: #fff3f4; border-left: 4px solid #C8102E; border-radius: 0 4px 4px 0; padding: 12px 16px; margin-bottom: 20px; font-size: 13.5px; color: #001F3F; font-family: 'Open Sans', sans-serif; line-height: 1.6; }\n  .hach-desc__warning strong { font-family: 'Montserrat', sans-serif; font-weight: 700; color: #C8102E; }\n\n  .hach-desc__note { background: #F3F6F8; border-left: 4px solid #001F3F; border-radius: 0 4px 4px 0; padding: 12px 16px; margin-bottom: 20px; font-size: 13.5px; color: #001F3F; font-family: 'Open Sans', sans-serif; line-height: 1.6; }\n  .hach-desc__note strong { font-family: 'Montserrat', sans-serif; font-weight: 700; }\n\n  .hach-desc__compare { display: grid; grid-template-columns: 1fr 1fr; gap: 8px; margin-bottom: 20px; }\n  .hach-desc__compare-card { background: #F3F6F8; border: 1px solid #e2e8f0; border-radius: 5px; padding: 12px 14px; }\n  .hach-desc__compare-card--red { border-top: 3px solid #C8102E; }\n  .hach-desc__compare-card--navy { border-top: 3px solid #001F3F; }\n  .hach-desc__compare-title { font-family: 'Montserrat', sans-serif; font-size: 12px; font-weight: 700; color: #001F3F; margin-bottom: 8px; }\n  .hach-desc__compare-item { display: flex; align-items: flex-start; gap: 7px; margin-bottom: 5px; }\n  .hach-desc__compare-item:last-child { margin-bottom: 0; }\n  .hach-desc__compare-dot--red { color: #C8102E; font-weight: 700; font-size: 13px; flex-shrink: 0; line-height: 1.5; }\n  .hach-desc__compare-dot--navy { color: #001F3F; font-weight: 700; font-size: 13px; flex-shrink: 0; line-height: 1.5; }\n  .hach-desc__compare-text { font-size: 12.5px; color: #374151; font-family: 'Open Sans', sans-serif; line-height: 1.45; }\n\n  .hach-desc__specs { display: grid; grid-template-columns: repeat(auto-fill, minmax(160px, 1fr)); gap: 8px; margin-bottom: 20px; }\n  .hach-desc__spec { background: #F3F6F8; border: 1px solid #e2e8f0; border-radius: 5px; padding: 10px 12px; }\n  .hach-desc__spec-label { font-family: 'Montserrat', sans-serif; font-size: 10px; font-weight: 700; text-transform: uppercase; letter-spacing: 0.07em; color: #718096; margin-bottom: 3px; }\n  .hach-desc__spec-value { font-family: 'Montserrat', sans-serif; font-size: 12.5px; font-weight: 700; color: #001F3F; line-height: 1.35; }\n  .hach-desc__spec--red { background: #fff3f4; border-color: #C8102E; }\n  .hach-desc__spec--red .hach-desc__spec-label { color: #C8102E; }\n  .hach-desc__spec--red .hach-desc__spec-value { color: #C8102E; }\n  .hach-desc__spec--highlight { background: #001F3F; border-color: #001F3F; }\n  .hach-desc__spec--highlight .hach-desc__spec-label { color: rgba(255,255,255,0.5); }\n  .hach-desc__spec--highlight .hach-desc__spec-value { color: #FFFFFF; }\n\n  .hach-desc__warranty { display: flex; align-items: center; gap: 10px; background: #001F3F; border-radius: 5px; padding: 12px 16px; }\n  .hach-desc__warranty-text { font-family: 'Montserrat', sans-serif; font-size: 13px; font-weight: 700; color: #FFFFFF; }\n  .hach-desc__warranty-sub { font-size: 12px; color: rgba(255,255,255,0.6); font-family: 'Open Sans', sans-serif; margin-top: 2px; }\n\n  @media (max-width: 480px) {\n    .hach-desc__compare { grid-template-columns: 1fr; }\n  }\n\u003c\/style\u003e\n\u003cdiv class=\"hach-desc\"\u003e\n\u003cp class=\"hach-desc__intro\"\u003eCSA-certified motorized inline zone damper for hot air supply duct control where full shutoff causes heat buildup, high-limit trips, or thermal stress. A 10% bypass is machined directly into the blade at the factory — permanent, consistent, always present. Same patented Hoyme 24 Vac spring return drive as the standard HAC. Sizes 2\"–9\".\u003c\/p\u003e\n\u003c!-- APPLICATION WARNING — unchanged, confirmed accurate against source --\u003e\n\u003cdiv class=\"hach-desc__critical\"\u003e\n\u003cstrong\u003eNot for fresh air, make-up air, or ventilation applications.\u003c\/strong\u003e The 10% bypass is permanent and cannot be disabled. On a fresh air or outdoor air duct, outdoor air infiltrates the building continuously through the bypass whenever the damper is commanded closed — every hour, every day, every season. If a HAC-H has been installed on a fresh air application in error, it must be replaced with a standard HAC.\u003c\/div\u003e\n\u003cdiv class=\"hach-desc__bullets\"\u003e\n\u003cdiv class=\"hach-desc__bullet\"\u003e\n\u003cspan class=\"hach-desc__bullet-check\"\u003e✓\u003c\/span\u003e \u003cspan class=\"hach-desc__bullet-text\"\u003e\u003cstrong\u003e10% bypass machined into the blade at the factory\u003c\/strong\u003e — not a field modification, not an adjustable insert, not removable; consistent on every unit\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"hach-desc__bullet\"\u003e\n\u003cspan class=\"hach-desc__bullet-check\"\u003e✓\u003c\/span\u003e \u003cspan class=\"hach-desc__bullet-text\"\u003e\u003cstrong\u003ePrevents high-limit trips on single-speed furnaces\u003c\/strong\u003e — maintains minimum airflow through closed zones, relieving static pressure and keeping heat exchanger airflow above the trip threshold\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"hach-desc__bullet\"\u003e\n\u003cspan class=\"hach-desc__bullet-check\"\u003e✓\u003c\/span\u003e \u003cspan class=\"hach-desc__bullet-text\"\u003e\u003cstrong\u003eSame patented Hoyme spring motor drive\u003c\/strong\u003e — stall-protected, holds against elevated duct static pressure on pressurized zone systems without tripping\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"hach-desc__bullet\"\u003e\n\u003cspan class=\"hach-desc__bullet-check\"\u003e✓\u003c\/span\u003e \u003cspan class=\"hach-desc__bullet-text\"\u003e\u003cstrong\u003eCSA certified — complete assembly\u003c\/strong\u003e — covers Canadian and US installations\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"hach-desc__bullet\"\u003e\n\u003cspan class=\"hach-desc__bullet-check\"\u003e✓\u003c\/span\u003e \u003cspan class=\"hach-desc__bullet-text\"\u003e\u003cstrong\u003ePO or PC action, end switch and relay available\u003c\/strong\u003e — all factory-installed; relay not available on 2\" and 3\"\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"hach-desc__bullet\"\u003e\n\u003cspan class=\"hach-desc__bullet-check\"\u003e✓\u003c\/span\u003e \u003cspan class=\"hach-desc__bullet-text\"\u003e\u003cstrong\u003eReplacement parts stocked\u003c\/strong\u003e — motor kits, microswitch kits, spring return kits at your wholesaler; drive services in place\u003c\/span\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c!-- CORRECTION 1: PO\/PC confirmation warning was absent from the original description.\n       The source document states: \"PO and PC are not interchangeable. Action cannot be\n       changed after installation. Confirm action before placing the order.\" All other HAC\n       family descriptions carry this warning. Added here with the session-consistent\n       softened language (field conversion requires drive disassembly, not practical in\n       a duct run). --\u003e\n\u003cdiv class=\"hach-desc__warning\"\u003e\n\u003cstrong\u003eConfirm PO vs. PC before ordering.\u003c\/strong\u003e The action is set at the factory. A field conversion procedure exists — it requires removing the motor, reversing the spring plate, and remounting the drive — but this is not practical once the unit is installed in a duct run. For most hot air zone control applications PO is correct — the zone opens when called and spring-closes when the call ends. PC is used only when the zone must fail open on power loss; confirm with the system designer before specifying PC on a zone damper.\u003c\/div\u003e\n\u003c!-- CORRECTION 2: Variable speed furnace row moved out of \"Use standard HAC when...\"\n       and into its own neutral row in the HAC-H column.\n       Original placed it only under standard HAC, implying the HAC-H is never correct\n       for variable speed. Source says: \"Variable speed furnace: HAC or HAC-H — Variable\n       speed modulates down — bypass may still be preferred; confirm with system designer.\"\n       Both products are valid; the correct choice depends on the system designer. --\u003e\n\u003cdiv class=\"hach-desc__compare\"\u003e\n\u003cdiv class=\"hach-desc__compare-card hach-desc__compare-card--red\"\u003e\n\u003cdiv class=\"hach-desc__compare-title\"\u003eUse HAC-H when…\u003c\/div\u003e\n\u003cdiv class=\"hach-desc__compare-item\"\u003e\n\u003cspan class=\"hach-desc__compare-dot--red\"\u003e✓\u003c\/span\u003e\u003cspan class=\"hach-desc__compare-text\"\u003eHot air supply duct zone control — single-speed furnace\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"hach-desc__compare-item\"\u003e\n\u003cspan class=\"hach-desc__compare-dot--red\"\u003e✓\u003c\/span\u003e\u003cspan class=\"hach-desc__compare-text\"\u003eClosing supply zones causes high-limit trips or heat buildup\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"hach-desc__compare-item\"\u003e\n\u003cspan class=\"hach-desc__compare-dot--red\"\u003e✓\u003c\/span\u003e\u003cspan class=\"hach-desc__compare-text\"\u003eMinimum airflow through all zones required regardless of call status\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"hach-desc__compare-item\"\u003e\n\u003cspan class=\"hach-desc__compare-dot--red\"\u003e✓\u003c\/span\u003e\u003cspan class=\"hach-desc__compare-text\"\u003eVariable speed furnace — bypass may still be preferred; confirm with system designer\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"hach-desc__compare-item\"\u003e\n\u003cspan class=\"hach-desc__compare-dot--red\"\u003e✓\u003c\/span\u003e\u003cspan class=\"hach-desc__compare-text\"\u003e120 Vac site — see HAC-12H\u003c\/span\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"hach-desc__compare-card hach-desc__compare-card--navy\"\u003e\n\u003cdiv class=\"hach-desc__compare-title\"\u003eUse standard HAC when…\u003c\/div\u003e\n\u003cdiv class=\"hach-desc__compare-item\"\u003e\n\u003cspan class=\"hach-desc__compare-dot--navy\"\u003e→\u003c\/span\u003e\u003cspan class=\"hach-desc__compare-text\"\u003eFresh air intake, make-up air, or ventilation — full shutoff required\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"hach-desc__compare-item\"\u003e\n\u003cspan class=\"hach-desc__compare-dot--navy\"\u003e→\u003c\/span\u003e\u003cspan class=\"hach-desc__compare-text\"\u003eReturn air zone control — bypass not required on return side\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"hach-desc__compare-item\"\u003e\n\u003cspan class=\"hach-desc__compare-dot--navy\"\u003e→\u003c\/span\u003e\u003cspan class=\"hach-desc__compare-text\"\u003eHRV \/ ERV duct control — bypass allows reverse infiltration\u003c\/span\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"hach-desc__specs\"\u003e\n\u003cdiv class=\"hach-desc__spec hach-desc__spec--highlight\"\u003e\n\u003cdiv class=\"hach-desc__spec-label\"\u003eBypass\u003c\/div\u003e\n\u003cdiv class=\"hach-desc__spec-value\"\u003e10% — factory machined, permanent\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"hach-desc__spec\"\u003e\n\u003cdiv class=\"hach-desc__spec-label\"\u003eSizes\u003c\/div\u003e\n\u003cdiv class=\"hach-desc__spec-value\"\u003e2\"–9\"\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"hach-desc__spec\"\u003e\n\u003cdiv class=\"hach-desc__spec-label\"\u003eVoltage\u003c\/div\u003e\n\u003cdiv class=\"hach-desc__spec-value\"\u003e24 Vac\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"hach-desc__spec\"\u003e\n\u003cdiv class=\"hach-desc__spec-label\"\u003eAction\u003c\/div\u003e\n\u003cdiv class=\"hach-desc__spec-value\"\u003ePO or PC\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"hach-desc__spec\"\u003e\n\u003cdiv class=\"hach-desc__spec-label\"\u003eCertification\u003c\/div\u003e\n\u003cdiv class=\"hach-desc__spec-value\"\u003eCSA — complete assembly\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"hach-desc__spec hach-desc__spec--red\"\u003e\n\u003cdiv class=\"hach-desc__spec-label\"\u003eNot Suitable For\u003c\/div\u003e\n\u003cdiv class=\"hach-desc__spec-value\"\u003eFresh air, make-up air, ventilation\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"hach-desc__note\"\u003e\n\u003cstrong\u003e120 Vac site?\u003c\/strong\u003e The HAC-12H combines the 120 Vac built-in transformer with the same 10% bypass blade. Use HAC-12H when only 120 Vac is available at the damper location and hot air zone control with bypass is required.\u003c\/div\u003e\n\u003cdiv class=\"hach-desc__warranty\"\u003e\n\u003csvg style=\"flex-shrink: 0;\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" fill=\"none\" viewbox=\"0 0 24 24\" height=\"20\" width=\"20\"\u003e\n      \u003cpath stroke-linejoin=\"round\" stroke-linecap=\"round\" stroke-width=\"1.8\" stroke=\"#C8102E\" d=\"M12 22s8-4 8-10V5l-8-3-8 3v7c0 6 8 10 8 10z\"\u003e\u003c\/path\u003e\n      \u003cpath stroke-linejoin=\"round\" stroke-linecap=\"round\" stroke-width=\"1.8\" stroke=\"#C8102E\" d=\"M9 12l2 2 4-4\"\u003e\u003c\/path\u003e\n    \u003c\/svg\u003e\n\u003cdiv\u003e\n\u003cdiv class=\"hach-desc__warranty-text\"\u003e2-year electrical · 10-year mechanical warranty\u003c\/div\u003e\n\u003cdiv class=\"hach-desc__warranty-sub\"\u003eMade in Canada · CSA certified for Canadian and US installations\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e","brand":"Hoyme Manufacturing","offers":[{"title":"2\" \/ Power Open (PO) \/ Standard (No Relay \/ No End Switch)","offer_id":43081011888171,"sku":"HAC-0210-OPO-H","price":228.0,"currency_code":"CAD","in_stock":true},{"title":"2\" \/ Power Open (PO) \/ End Switch (No Relay)","offer_id":43081011920939,"sku":"HAC-0210-SPO-H","price":256.0,"currency_code":"CAD","in_stock":true},{"title":"2\" \/ Power Close (PC) \/ Standard (No Relay \/ No End Switch)","offer_id":43081012019243,"sku":"HAC-0210-OPC-H","price":228.0,"currency_code":"CAD","in_stock":true},{"title":"2\" \/ Power Close (PC) \/ End Switch (No Relay)","offer_id":43081012052011,"sku":"HAC-0210-SPC-H","price":256.0,"currency_code":"CAD","in_stock":true},{"title":"3\" \/ Power Open (PO) \/ Standard (No Relay \/ No End Switch)","offer_id":43081012150315,"sku":"HAC-0310-OPO-H","price":228.0,"currency_code":"CAD","in_stock":true},{"title":"3\" \/ Power Open (PO) \/ End Switch (No Relay)","offer_id":43081012183083,"sku":"HAC-0310-SPO-H","price":256.0,"currency_code":"CAD","in_stock":true},{"title":"3\" \/ Power Close (PC) \/ Standard (No Relay \/ No End Switch)","offer_id":43081012281387,"sku":"HAC-0310-OPC-H","price":228.0,"currency_code":"CAD","in_stock":true},{"title":"3\" \/ Power Close (PC) \/ End Switch (No Relay)","offer_id":43081012314155,"sku":"HAC-0310-SPC-H","price":256.0,"currency_code":"CAD","in_stock":true},{"title":"4\" \/ Power Open (PO) \/ Standard (No Relay \/ No End Switch)","offer_id":43081012412459,"sku":"HAC-0410-OPO-H","price":222.0,"currency_code":"CAD","in_stock":true},{"title":"4\" \/ Power Open (PO) \/ End Switch (No Relay)","offer_id":43081012445227,"sku":"HAC-0410-SPO-H","price":249.0,"currency_code":"CAD","in_stock":true},{"title":"4\" \/ Power Open (PO) \/ Relay (No End Switch)","offer_id":43081012477995,"sku":"HAC-0411-OPO-H","price":272.0,"currency_code":"CAD","in_stock":true},{"title":"4\" \/ Power Open (PO) \/ Relay + End Switch","offer_id":43081012510763,"sku":"HAC-0411-SPO-H","price":300.0,"currency_code":"CAD","in_stock":true},{"title":"4\" \/ Power Close (PC) \/ Standard (No Relay \/ No End Switch)","offer_id":43081012543531,"sku":"HAC-0410-OPC-H","price":222.0,"currency_code":"CAD","in_stock":true},{"title":"4\" \/ Power Close (PC) \/ End Switch (No Relay)","offer_id":43081012576299,"sku":"HAC-0410-SPC-H","price":249.0,"currency_code":"CAD","in_stock":true},{"title":"4\" \/ Power Close (PC) \/ Relay (No End Switch)","offer_id":43081012609067,"sku":"HAC-0411-OPC-H","price":272.0,"currency_code":"CAD","in_stock":true},{"title":"4\" \/ Power Close (PC) \/ Relay + End Switch","offer_id":43081012641835,"sku":"HAC-0411-SPC-H","price":300.0,"currency_code":"CAD","in_stock":true},{"title":"5\" \/ Power Open (PO) \/ Standard (No Relay \/ No End Switch)","offer_id":43081012674603,"sku":"HAC-0510-OPO-H","price":223.0,"currency_code":"CAD","in_stock":true},{"title":"5\" \/ Power 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+ End Switch","offer_id":43081012903979,"sku":"HAC-0511-SPC-H","price":301.0,"currency_code":"CAD","in_stock":true},{"title":"6\" \/ Power Open (PO) \/ Standard (No Relay \/ No End Switch)","offer_id":43081012936747,"sku":"HAC-0610-OPO-H","price":228.0,"currency_code":"CAD","in_stock":true},{"title":"6\" \/ Power Open (PO) \/ End Switch (No Relay)","offer_id":43081012969515,"sku":"HAC-0610-SPO-H","price":253.0,"currency_code":"CAD","in_stock":true},{"title":"6\" \/ Power Open (PO) \/ Relay (No End Switch)","offer_id":43081013002283,"sku":"HAC-0611-OPO-H","price":276.0,"currency_code":"CAD","in_stock":true},{"title":"6\" \/ Power Open (PO) \/ Relay + End Switch","offer_id":43081013035051,"sku":"HAC-0611-SPO-H","price":304.0,"currency_code":"CAD","in_stock":true},{"title":"6\" \/ Power Close (PC) \/ Standard (No Relay \/ No End Switch)","offer_id":43081013067819,"sku":"HAC-0610-OPC-H","price":228.0,"currency_code":"CAD","in_stock":true},{"title":"6\" \/ Power Close (PC) \/ End Switch (No Relay)","offer_id":43081013100587,"sku":"HAC-0610-SPC-H","price":253.0,"currency_code":"CAD","in_stock":true},{"title":"6\" \/ Power Close (PC) \/ Relay (No End Switch)","offer_id":43081013133355,"sku":"HAC-0611-OPC-H","price":276.0,"currency_code":"CAD","in_stock":true},{"title":"6\" \/ Power Close (PC) \/ Relay + End Switch","offer_id":43081013166123,"sku":"HAC-0611-SPC-H","price":304.0,"currency_code":"CAD","in_stock":true},{"title":"7\" \/ Power Open (PO) \/ Standard (No Relay \/ No End Switch)","offer_id":43081013198891,"sku":"HAC-0710-OPO-H","price":229.0,"currency_code":"CAD","in_stock":true},{"title":"7\" \/ Power Open (PO) \/ End Switch (No Relay)","offer_id":43081013231659,"sku":"HAC-0710-SPO-H","price":256.0,"currency_code":"CAD","in_stock":true},{"title":"7\" \/ Power Open (PO) \/ Relay (No End Switch)","offer_id":43081013264427,"sku":"HAC-0711-OPO-H","price":277.0,"currency_code":"CAD","in_stock":true},{"title":"7\" \/ Power Open (PO) \/ Relay + End Switch","offer_id":43081013297195,"sku":"HAC-0711-SPO-H","price":305.0,"currency_code":"CAD","in_stock":true},{"title":"7\" \/ Power Close (PC) \/ Standard (No Relay \/ No End Switch)","offer_id":43081013329963,"sku":"HAC-0710-OPC-H","price":229.0,"currency_code":"CAD","in_stock":true},{"title":"7\" \/ Power Close (PC) \/ End Switch (No Relay)","offer_id":43081013362731,"sku":"HAC-0710-SPC-H","price":256.0,"currency_code":"CAD","in_stock":true},{"title":"7\" \/ Power Close (PC) \/ Relay (No End Switch)","offer_id":43081013395499,"sku":"HAC-0711-OPC-H","price":277.0,"currency_code":"CAD","in_stock":true},{"title":"7\" \/ Power Close (PC) \/ Relay + End Switch","offer_id":43081013428267,"sku":"HAC-0711-SPC-H","price":305.0,"currency_code":"CAD","in_stock":true},{"title":"8\" \/ Power Open (PO) \/ Standard (No Relay \/ No End Switch)","offer_id":43081013461035,"sku":"HAC-0810-OPO-H","price":231.0,"currency_code":"CAD","in_stock":true},{"title":"8\" \/ Power Open (PO) \/ End Switch (No Relay)","offer_id":43081013493803,"sku":"HAC-0810-SPO-H","price":259.0,"currency_code":"CAD","in_stock":true},{"title":"8\" \/ Power Open (PO) \/ Relay (No End Switch)","offer_id":43081013526571,"sku":"HAC-0811-OPO-H","price":279.0,"currency_code":"CAD","in_stock":true},{"title":"8\" \/ Power Open (PO) \/ Relay + End Switch","offer_id":43081013559339,"sku":"HAC-0811-SPO-H","price":306.0,"currency_code":"CAD","in_stock":true},{"title":"8\" \/ Power Close (PC) \/ Standard (No Relay \/ No End Switch)","offer_id":43081013592107,"sku":"HAC-0810-OPC-H","price":231.0,"currency_code":"CAD","in_stock":true},{"title":"8\" \/ Power Close (PC) \/ End Switch (No Relay)","offer_id":43081013624875,"sku":"HAC-0810-SPC-H","price":259.0,"currency_code":"CAD","in_stock":true},{"title":"8\" \/ Power Close (PC) \/ Relay (No End Switch)","offer_id":43081013657643,"sku":"HAC-0811-OPC-H","price":279.0,"currency_code":"CAD","in_stock":true},{"title":"8\" \/ Power Close (PC) \/ Relay + End Switch","offer_id":43081013690411,"sku":"HAC-0811-SPC-H","price":306.0,"currency_code":"CAD","in_stock":true},{"title":"9\" \/ Power Open (PO) \/ Standard (No Relay \/ No End Switch)","offer_id":43081013723179,"sku":"HAC-0910-OPO-H","price":233.0,"currency_code":"CAD","in_stock":true},{"title":"9\" \/ Power Open (PO) \/ End Switch (No Relay)","offer_id":43081013755947,"sku":"HAC-0910-SPO-H","price":262.0,"currency_code":"CAD","in_stock":true},{"title":"9\" \/ Power Open (PO) \/ Relay (No End Switch)","offer_id":43081013788715,"sku":"HAC-0911-OPO-H","price":283.0,"currency_code":"CAD","in_stock":true},{"title":"9\" \/ Power Open (PO) \/ Relay + End Switch","offer_id":43081013821483,"sku":"HAC-0911-SPO-H","price":309.0,"currency_code":"CAD","in_stock":true},{"title":"9\" \/ Power Close (PC) \/ Standard (No Relay \/ No End Switch)","offer_id":43081013854251,"sku":"HAC-0910-OPC-H","price":233.0,"currency_code":"CAD","in_stock":true},{"title":"9\" \/ Power Close (PC) \/ End Switch (No Relay)","offer_id":43081013887019,"sku":"HAC-0910-SPC-H","price":262.0,"currency_code":"CAD","in_stock":true},{"title":"9\" \/ Power Close (PC) \/ Relay (No End Switch)","offer_id":43081013919787,"sku":"HAC-0911-OPC-H","price":283.0,"currency_code":"CAD","in_stock":true},{"title":"9\" \/ Power Close (PC) \/ Relay + End Switch","offer_id":43081013952555,"sku":"HAC-0911-SPC-H","price":309.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0647\/3459\/3067\/files\/image_89.png?v=1775771114"},{"product_id":"hac-f-motorized-flue-damper-24vac","title":"HAC-F Motorized Flue Damper — CSA Certified, Power Close \/ Spring Open, 4\"–9\", Relay and End Switch Included","description":"\u003cp\u003e\u003cem\u003eProduct image is representative only. Actual product may differ in appearance depending on size, configuration, and options selected at order.\u003c\/em\u003e\u003c\/p\u003e\n\u003cstyle\u003e\n  .hacf-desc * { box-sizing: border-box; margin: 0; padding: 0; }\n  .hacf-desc { font-family: 'Open Sans', sans-serif; color: #001F3F; line-height: 1.6; font-size: 15px; }\n\n  .hacf-desc__intro { font-size: 15px; line-height: 1.75; color: #374151; margin-bottom: 20px; }\n\n  .hacf-desc__critical { background: #fff3f4; border-left: 4px solid #C8102E; border-radius: 0 4px 4px 0; padding: 12px 16px; margin-bottom: 20px; font-size: 13.5px; color: #001F3F; font-family: 'Open Sans', sans-serif; line-height: 1.6; }\n  .hacf-desc__critical strong { font-family: 'Montserrat', sans-serif; font-weight: 700; color: #C8102E; }\n\n  .hacf-desc__bullets { display: flex; flex-direction: column; gap: 6px; margin-bottom: 20px; }\n  .hacf-desc__bullet { display: flex; align-items: flex-start; gap: 10px; }\n  .hacf-desc__bullet-check { color: #C8102E; font-weight: 700; font-size: 14px; flex-shrink: 0; line-height: 1.6; }\n  .hacf-desc__bullet-text { font-size: 14px; color: #374151; font-family: 'Open Sans', sans-serif; line-height: 1.6; }\n  .hacf-desc__bullet-text strong { font-family: 'Montserrat', sans-serif; font-weight: 700; color: #001F3F; }\n\n  .hacf-desc__failsafe { background: #001F3F; border-radius: 6px; padding: 16px 20px; margin-bottom: 20px; display: flex; align-items: flex-start; gap: 14px; }\n  .hacf-desc__failsafe-icon { flex-shrink: 0; margin-top: 2px; }\n  .hacf-desc__failsafe-title { font-family: 'Montserrat', sans-serif; font-size: 13px; font-weight: 700; color: #FFFFFF; margin-bottom: 4px; }\n  .hacf-desc__failsafe-body { font-size: 12.5px; color: rgba(255,255,255,0.7); font-family: 'Open Sans', sans-serif; line-height: 1.55; }\n\n  .hacf-desc__sequence { display: flex; flex-direction: column; gap: 6px; margin-bottom: 20px; }\n  .hacf-desc__sequence-step { display: flex; align-items: flex-start; gap: 12px; background: #F3F6F8; border-radius: 5px; padding: 10px 14px; }\n  .hacf-desc__sequence-num { min-width: 24px; height: 24px; background: #C8102E; border-radius: 50%; display: flex; align-items: center; justify-content: center; font-family: 'Montserrat', sans-serif; font-weight: 700; font-size: 11px; color: #FFFFFF; flex-shrink: 0; }\n  .hacf-desc__sequence-text { font-size: 13px; color: #374151; font-family: 'Open Sans', sans-serif; line-height: 1.5; }\n  .hacf-desc__sequence-text strong { font-family: 'Montserrat', sans-serif; font-weight: 700; color: #001F3F; }\n\n  .hacf-desc__specs { display: grid; grid-template-columns: repeat(auto-fill, minmax(160px, 1fr)); gap: 8px; margin-bottom: 20px; }\n  .hacf-desc__spec { background: #F3F6F8; border: 1px solid #e2e8f0; border-radius: 5px; padding: 10px 12px; }\n  .hacf-desc__spec-label { font-family: 'Montserrat', sans-serif; font-size: 10px; font-weight: 700; text-transform: uppercase; letter-spacing: 0.07em; color: #718096; margin-bottom: 3px; }\n  .hacf-desc__spec-value { font-family: 'Montserrat', sans-serif; font-size: 12.5px; font-weight: 700; color: #001F3F; line-height: 1.35; }\n  .hacf-desc__spec--highlight { background: #001F3F; border-color: #001F3F; }\n  .hacf-desc__spec--highlight .hacf-desc__spec-label { color: rgba(255,255,255,0.5); }\n  .hacf-desc__spec--highlight .hacf-desc__spec-value { color: #FFFFFF; }\n  .hacf-desc__spec--green { background: #f0fdf4; border-color: #16a34a; }\n  .hacf-desc__spec--green .hacf-desc__spec-label { color: #16a34a; }\n  .hacf-desc__spec--green .hacf-desc__spec-value { color: #166534; }\n\n  .hacf-desc__adp { background: #F3F6F8; border-radius: 6px; padding: 16px 18px; margin-bottom: 20px; }\n  .hacf-desc__adp-title { font-family: 'Montserrat', sans-serif; font-size: 13px; font-weight: 700; color: #001F3F; margin-bottom: 10px; }\n  .hacf-desc__adp-row { display: flex; align-items: flex-start; gap: 10px; padding: 7px 0; border-bottom: 1px solid #e2e8f0; }\n  .hacf-desc__adp-row:last-child { border-bottom: none; }\n  .hacf-desc__adp-appliance { font-size: 12.5px; color: #374151; font-family: 'Open Sans', sans-serif; flex: 1; line-height: 1.45; }\n  .hacf-desc__adp-model { font-family: 'Montserrat', sans-serif; font-size: 12px; font-weight: 700; color: #C8102E; white-space: nowrap; flex-shrink: 0; }\n\n  .hacf-desc__note { background: #F3F6F8; border-left: 4px solid #001F3F; border-radius: 0 4px 4px 0; padding: 12px 16px; margin-bottom: 20px; font-size: 13.5px; color: #001F3F; font-family: 'Open Sans', sans-serif; line-height: 1.6; }\n  .hacf-desc__note strong { font-family: 'Montserrat', sans-serif; font-weight: 700; }\n\n  .hacf-desc__warranty { display: flex; align-items: center; gap: 10px; background: #001F3F; border-radius: 5px; padding: 12px 16px; }\n  .hacf-desc__warranty-text { font-family: 'Montserrat', sans-serif; font-size: 13px; font-weight: 700; color: #FFFFFF; }\n  .hacf-desc__warranty-sub { font-size: 12px; color: rgba(255,255,255,0.6); font-family: 'Open Sans', sans-serif; margin-top: 2px; }\n\u003c\/style\u003e\n\u003cdiv class=\"hacf-desc\"\u003e\n\u003cp class=\"hacf-desc__intro\"\u003eCSA-certified motorized round flue control damper for fuel-burning appliance vent and flue runs, 4\"–9\". Power Close \/ Spring Open on every unit — closes when powered, springs open on any power loss, keeping the flue clear when the electrical system fails. Relay and end switch included on every unit. Select size only.\u003c\/p\u003e\n\u003cdiv class=\"hacf-desc__critical\"\u003e\n\u003cstrong\u003eDo not substitute a standard HAC on a flue application.\u003c\/strong\u003e A standard HAC with Power Open \/ Spring Close action fails closed on power loss — sealing the flue while the appliance is firing. On a gas or oil appliance, a closed flue during operation creates carbon monoxide accumulation and back-draft risk. The HAC-F SPC-F actuator is selected specifically because it fails open. The flue is always clear on any power interruption.\u003c\/div\u003e\n\u003cdiv class=\"hacf-desc__bullets\"\u003e\n\u003cdiv class=\"hacf-desc__bullet\"\u003e\n\u003cspan class=\"hacf-desc__bullet-check\"\u003e✓\u003c\/span\u003e \u003cspan class=\"hacf-desc__bullet-text\"\u003e\u003cstrong\u003eSpring Open fail-safe — always\u003c\/strong\u003e — if power is lost while the appliance is firing, the spring opens the damper and the flue is clear; no control system, no signal, no electricity required\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"hacf-desc__bullet\"\u003e\n\u003cspan class=\"hacf-desc__bullet-check\"\u003e✓\u003c\/span\u003e \u003cspan class=\"hacf-desc__bullet-text\"\u003e\u003cstrong\u003eRelay and end switch included on every unit\u003c\/strong\u003e — a flue damper without interlock capability is an incomplete safety installation; relay and end switch are not optional on the HAC-F\u003c\/span\u003e\n\u003c\/div\u003e\n\u003c!-- CORRECTION: Original bullet read \"not a substitute for the HAC-FS on code-required\n         applications\" — this has the substitution backwards. As written it implies the\n         HAC-F cannot replace the HAC-FS, making the HAC-FS the more qualified product.\n         The correct meaning (confirmed against source) is the opposite: the HAC-FS must\n         not be substituted for the HAC-F on code-required applications. Corrected below. --\u003e\n\u003cdiv class=\"hacf-desc__bullet\"\u003e\n\u003cspan class=\"hacf-desc__bullet-check\"\u003e✓\u003c\/span\u003e \u003cspan class=\"hacf-desc__bullet-text\"\u003e\u003cstrong\u003eCSA certified — complete assembly\u003c\/strong\u003e — the HAC-FS is not an acceptable substitute on code-required applications; AHJ will verify certification\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"hacf-desc__bullet\"\u003e\n\u003cspan class=\"hacf-desc__bullet-check\"\u003e✓\u003c\/span\u003e \u003cspan class=\"hacf-desc__bullet-text\"\u003e\u003cstrong\u003eSelect size only\u003c\/strong\u003e — 4\" through 9\"; action, relay, and end switch are pre-configured on every unit; no configuration errors possible\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"hacf-desc__bullet\"\u003e\n\u003cspan class=\"hacf-desc__bullet-check\"\u003e✓\u003c\/span\u003e \u003cspan class=\"hacf-desc__bullet-text\"\u003e\u003cstrong\u003ePatented Hoyme spring motor drive\u003c\/strong\u003e — stall-protected, nylon bearings; engineered for the mechanical stresses of a flue run application\u003c\/span\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"hacf-desc__failsafe\"\u003e\n\u003cdiv class=\"hacf-desc__failsafe-icon\"\u003e\u003csvg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" fill=\"none\" viewbox=\"0 0 24 24\" height=\"22\" width=\"22\"\u003e\n        \u003cpath stroke-linejoin=\"round\" stroke-linecap=\"round\" stroke-width=\"1.8\" stroke=\"#C8102E\" d=\"M12 22s8-4 8-10V5l-8-3-8 3v7c0 6 8 10 8 10z\"\u003e\u003c\/path\u003e\n        \u003cpath stroke-linejoin=\"round\" stroke-linecap=\"round\" stroke-width=\"1.8\" stroke=\"#C8102E\" d=\"M9 12l2 2 4-4\"\u003e\u003c\/path\u003e\n      \u003c\/svg\u003e\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cdiv class=\"hacf-desc__failsafe-title\"\u003eWhy Power Close \/ Spring Open — not Power Open \/ Spring Close\u003c\/div\u003e\n\u003cdiv class=\"hacf-desc__failsafe-body\"\u003eThe HAC-F is at rest in the spring-open position — flue clear — when there is no power. When the appliance calls to fire, 24 Vac closes the damper to reduce standby heat loss. If power is interrupted at any point, the spring immediately opens the damper. The fail-safe is always in the direction of a clear flue. A Power Open \/ Spring Close damper is the opposite — it fails closed, sealing the flue during a power interruption while the appliance may still be firing.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"hacf-desc__sequence\"\u003e\n\u003cdiv class=\"hacf-desc__sequence-step\"\u003e\n\u003cdiv class=\"hacf-desc__sequence-num\"\u003e1\u003c\/div\u003e\n\u003cdiv class=\"hacf-desc__sequence-text\"\u003e\n\u003cstrong\u003eAppliance calls to fire\u003c\/strong\u003e — ADP relay adaptor receives the call signal from the appliance safety circuit\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"hacf-desc__sequence-step\"\u003e\n\u003cdiv class=\"hacf-desc__sequence-num\"\u003e2\u003c\/div\u003e\n\u003cdiv class=\"hacf-desc__sequence-text\"\u003e\n\u003cstrong\u003eHAC-F de-energizes\u003c\/strong\u003e — spring opens the damper; flue path is clear\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"hacf-desc__sequence-step\"\u003e\n\u003cdiv class=\"hacf-desc__sequence-num\"\u003e3\u003c\/div\u003e\n\u003cdiv class=\"hacf-desc__sequence-text\"\u003e\n\u003cstrong\u003eEnd switch confirms open position\u003c\/strong\u003e — signal returns to ADP relay adaptor confirming flue is clear\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"hacf-desc__sequence-step\"\u003e\n\u003cdiv class=\"hacf-desc__sequence-num\"\u003e4\u003c\/div\u003e\n\u003cdiv class=\"hacf-desc__sequence-text\"\u003e\n\u003cstrong\u003eADP releases appliance safety circuit\u003c\/strong\u003e — appliance fires; if end switch does not confirm, appliance stays off\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"hacf-desc__sequence-step\"\u003e\n\u003cdiv class=\"hacf-desc__sequence-num\"\u003e5\u003c\/div\u003e\n\u003cdiv class=\"hacf-desc__sequence-text\"\u003e\n\u003cstrong\u003eAppliance call ends\u003c\/strong\u003e — ADP energizes HAC-F (Power Close), damper closes to reduce standby heat loss through the flue\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"hacf-desc__specs\"\u003e\n\u003cdiv class=\"hacf-desc__spec hacf-desc__spec--highlight\"\u003e\n\u003cdiv class=\"hacf-desc__spec-label\"\u003eFail-Safe Direction\u003c\/div\u003e\n\u003cdiv class=\"hacf-desc__spec-value\"\u003eSpring Open — flue always clear on power loss\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"hacf-desc__spec\"\u003e\n\u003cdiv class=\"hacf-desc__spec-label\"\u003eSizes\u003c\/div\u003e\n\u003cdiv class=\"hacf-desc__spec-value\"\u003e4\"–9\"\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"hacf-desc__spec\"\u003e\n\u003cdiv class=\"hacf-desc__spec-label\"\u003eVoltage\u003c\/div\u003e\n\u003cdiv class=\"hacf-desc__spec-value\"\u003e24 Vac\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"hacf-desc__spec\"\u003e\n\u003cdiv class=\"hacf-desc__spec-label\"\u003eAction\u003c\/div\u003e\n\u003cdiv class=\"hacf-desc__spec-value\"\u003ePower Close \/ Spring Open (SPC-F)\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"hacf-desc__spec hacf-desc__spec--green\"\u003e\n\u003cdiv class=\"hacf-desc__spec-label\"\u003eIncluded\u003c\/div\u003e\n\u003cdiv class=\"hacf-desc__spec-value\"\u003eRelay + end switch — every unit\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"hacf-desc__spec\"\u003e\n\u003cdiv class=\"hacf-desc__spec-label\"\u003eCertification\u003c\/div\u003e\n\u003cdiv class=\"hacf-desc__spec-value\"\u003eCSA certified\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c!-- ADP TABLE: ADP-0MV2-S5A and ADP-1102-S5A are confirmed in the 2026 price list.\n       ADP-0240-S5A appears in the SharePoint source document for this product but is NOT\n       listed in the 2026 price list. Same unresolved flag as ADP-0241-S5A across other\n       products. The 24 Vac furnace row is retained as-is from the source pending factory\n       verification. Do not change this model number without factory confirmation. --\u003e\n\u003cdiv class=\"hacf-desc__adp\"\u003e\n\u003cdiv class=\"hacf-desc__adp-title\"\u003eSelect the correct ADP relay adaptor for your appliance\u003c\/div\u003e\n\u003cdiv class=\"hacf-desc__adp-row\"\u003e\n\u003cspan class=\"hacf-desc__adp-appliance\"\u003eGas furnace — millivolt \/ standing pilot system (250mVdc–100Vdc)\u003c\/span\u003e \u003cspan class=\"hacf-desc__adp-model\"\u003eADP-0MV2-S5A\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"hacf-desc__adp-row\"\u003e\n\u003cspan class=\"hacf-desc__adp-appliance\"\u003eGas furnace — 24 Vac system\u003c\/span\u003e \u003cspan class=\"hacf-desc__adp-model\"\u003eADP-0240-S5A\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"hacf-desc__adp-row\"\u003e\n\u003cspan class=\"hacf-desc__adp-appliance\"\u003eBoiler or tankless water heater — 110 Vac system\u003c\/span\u003e \u003cspan class=\"hacf-desc__adp-model\"\u003eADP-1102-S5A\u003c\/span\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"hacf-desc__note\"\u003e\n\u003cstrong\u003eNeed sizes 10\"–30\"?\u003c\/strong\u003e See the HAC-F Large Diameter listing — Belimo TFB24 actuator, same SPC-F spring-open fail-safe, for commercial flue applications. For non-permitted applications where CSA certification is genuinely not required by the AHJ, see the HAC-FS. Never substitute HAC-FS on a code-required installation.\u003c\/div\u003e\n\u003cdiv class=\"hacf-desc__warranty\"\u003e\n\u003csvg style=\"flex-shrink: 0;\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" fill=\"none\" viewbox=\"0 0 24 24\" height=\"20\" width=\"20\"\u003e\n      \u003cpath stroke-linejoin=\"round\" stroke-linecap=\"round\" stroke-width=\"1.8\" stroke=\"#C8102E\" d=\"M12 22s8-4 8-10V5l-8-3-8 3v7c0 6 8 10 8 10z\"\u003e\u003c\/path\u003e\n      \u003cpath stroke-linejoin=\"round\" stroke-linecap=\"round\" stroke-width=\"1.8\" stroke=\"#C8102E\" d=\"M9 12l2 2 4-4\"\u003e\u003c\/path\u003e\n    \u003c\/svg\u003e\n\u003cdiv\u003e\n\u003cdiv class=\"hacf-desc__warranty-text\"\u003e2-year electrical · 10-year mechanical warranty\u003c\/div\u003e\n\u003cdiv class=\"hacf-desc__warranty-sub\"\u003eCSA certified · Made in Canada · Interlock required — always\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e","brand":"Hoyme Manufacturing","offers":[{"title":"4\"","offer_id":43081036300331,"sku":"HAC-0411-SPC-F","price":318.0,"currency_code":"CAD","in_stock":true},{"title":"5\"","offer_id":43081036333099,"sku":"HAC-0511-SPC-F","price":319.0,"currency_code":"CAD","in_stock":true},{"title":"6\"","offer_id":43081036365867,"sku":"HAC-0611-SPC-F","price":321.0,"currency_code":"CAD","in_stock":true},{"title":"7\"","offer_id":43081036398635,"sku":"HAC-0711-SPC-F","price":322.0,"currency_code":"CAD","in_stock":true},{"title":"8\"","offer_id":43081036431403,"sku":"HAC-0811-SPC-F","price":323.0,"currency_code":"CAD","in_stock":true},{"title":"9\"","offer_id":43081036464171,"sku":"HAC-0911-SPC-F","price":327.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0647\/3459\/3067\/files\/image_88.png?v=1775770945"},{"product_id":"hac-12-inline-air-damper-120vac","title":"HAC-12 Inline Fresh Air Damper — CSA Certified, 120 Vac, Built-In Transformer, 4\"–9\"","description":"\u003cp\u003e\u003cem\u003eProduct image is representative only. Actual product may differ in appearance depending on size, configuration, and options selected at order.\u003c\/em\u003e\u003c\/p\u003e\n\u003cstyle\u003e\n  .hac12-desc * { box-sizing: border-box; margin: 0; padding: 0; }\n  .hac12-desc { font-family: 'Open Sans', sans-serif; color: #001F3F; line-height: 1.6; font-size: 15px; }\n\n  .hac12-desc__intro { font-size: 15px; line-height: 1.75; color: #374151; margin-bottom: 20px; }\n\n  .hac12-desc__bullets { display: flex; flex-direction: column; gap: 6px; margin-bottom: 20px; }\n  .hac12-desc__bullet { display: flex; align-items: flex-start; gap: 10px; }\n  .hac12-desc__bullet-check { color: #C8102E; font-weight: 700; font-size: 14px; flex-shrink: 0; line-height: 1.6; }\n  .hac12-desc__bullet-text { font-size: 14px; color: #374151; font-family: 'Open Sans', sans-serif; line-height: 1.6; }\n  .hac12-desc__bullet-text strong { font-family: 'Montserrat', sans-serif; font-weight: 700; color: #001F3F; }\n\n  .hac12-desc__warning { background: #fff3f4; border-left: 4px solid #C8102E; border-radius: 0 4px 4px 0; padding: 12px 16px; margin-bottom: 20px; font-size: 13.5px; color: #001F3F; font-family: 'Open Sans', sans-serif; line-height: 1.6; }\n  .hac12-desc__warning strong { font-family: 'Montserrat', sans-serif; font-weight: 700; color: #C8102E; }\n\n  .hac12-desc__note { background: #F3F6F8; border-left: 4px solid #001F3F; border-radius: 0 4px 4px 0; padding: 12px 16px; margin-bottom: 20px; font-size: 13.5px; color: #001F3F; font-family: 'Open Sans', sans-serif; line-height: 1.6; }\n  .hac12-desc__note strong { font-family: 'Montserrat', sans-serif; font-weight: 700; }\n  .hac12-desc__note a { color: #C8102E; text-decoration: none; font-weight: 600; }\n\n  .hac12-desc__compare { display: grid; grid-template-columns: 1fr 1fr; gap: 8px; margin-bottom: 20px; }\n  .hac12-desc__compare-card { background: #F3F6F8; border: 1px solid #e2e8f0; border-radius: 5px; padding: 12px 14px; }\n  .hac12-desc__compare-card--red { border-top: 3px solid #C8102E; }\n  .hac12-desc__compare-card--navy { border-top: 3px solid #001F3F; }\n  .hac12-desc__compare-title { font-family: 'Montserrat', sans-serif; font-size: 12px; font-weight: 700; color: #001F3F; margin-bottom: 8px; }\n  .hac12-desc__compare-item { display: flex; align-items: flex-start; gap: 7px; margin-bottom: 5px; }\n  .hac12-desc__compare-item:last-child { margin-bottom: 0; }\n  .hac12-desc__compare-dot--red { color: #C8102E; font-weight: 700; font-size: 13px; flex-shrink: 0; line-height: 1.5; }\n  .hac12-desc__compare-dot--navy { color: #001F3F; font-weight: 700; font-size: 13px; flex-shrink: 0; line-height: 1.5; }\n  .hac12-desc__compare-text { font-size: 12.5px; color: #374151; font-family: 'Open Sans', sans-serif; line-height: 1.45; }\n\n  .hac12-desc__specs { display: grid; grid-template-columns: repeat(auto-fill, minmax(160px, 1fr)); gap: 8px; margin-bottom: 20px; }\n  .hac12-desc__spec { background: #F3F6F8; border: 1px solid #e2e8f0; border-radius: 5px; padding: 10px 12px; }\n  .hac12-desc__spec-label { font-family: 'Montserrat', sans-serif; font-size: 10px; font-weight: 700; text-transform: uppercase; letter-spacing: 0.07em; color: #718096; margin-bottom: 3px; }\n  .hac12-desc__spec-value { font-family: 'Montserrat', sans-serif; font-size: 12.5px; font-weight: 700; color: #001F3F; line-height: 1.35; }\n  .hac12-desc__spec--highlight { background: #001F3F; border-color: #001F3F; }\n  .hac12-desc__spec--highlight .hac12-desc__spec-label { color: rgba(255,255,255,0.5); }\n  .hac12-desc__spec--highlight .hac12-desc__spec-value { color: #FFFFFF; }\n  .hac12-desc__spec--amber { background: #fffbeb; border-color: #d97706; }\n  .hac12-desc__spec--amber .hac12-desc__spec-label { color: #92400e; }\n  .hac12-desc__spec--amber .hac12-desc__spec-value { color: #92400e; }\n\n  .hac12-desc__variants { display: grid; grid-template-columns: repeat(auto-fill, minmax(200px, 1fr)); gap: 8px; margin-bottom: 20px; }\n  .hac12-desc__variant { background: #F3F6F8; border: 1px solid #e2e8f0; border-radius: 5px; padding: 10px 14px; }\n  .hac12-desc__variant-code { font-family: 'Montserrat', sans-serif; font-size: 13px; font-weight: 800; color: #C8102E; margin-bottom: 2px; }\n  .hac12-desc__variant-desc { font-size: 12px; color: #374151; font-family: 'Open Sans', sans-serif; line-height: 1.4; }\n\n  .hac12-desc__warranty { display: flex; align-items: center; gap: 10px; background: #001F3F; border-radius: 5px; padding: 12px 16px; }\n  .hac12-desc__warranty-text { font-family: 'Montserrat', sans-serif; font-size: 13px; font-weight: 700; color: #FFFFFF; }\n  .hac12-desc__warranty-sub { font-size: 12px; color: rgba(255,255,255,0.6); font-family: 'Open Sans', sans-serif; margin-top: 2px; }\n\n  @media (max-width: 480px) {\n    .hac12-desc__compare { grid-template-columns: 1fr; }\n  }\n\u003c\/style\u003e\n\u003cdiv class=\"hac12-desc\"\u003e\n\u003cp class=\"hac12-desc__intro\"\u003e120 Vac version of the standard HAC inline fresh air damper. A built-in transformer steps 120 Vac down to 24 Vac internally — run a single switched 120 Vac circuit to the damper and it handles the voltage conversion. No separate transformer, no low-voltage wiring run, no additional panel space. Same spring return open\/close operation as the standard HAC. CSA certified. Sizes 4\"–9\".\u003c\/p\u003e\n\u003c!-- Voltage warning — confirmed accurate against source --\u003e\n\u003cdiv class=\"hac12-desc__warning\"\u003e\n\u003cstrong\u003eDo not supply 24 Vac to a HAC-12.\u003c\/strong\u003e The built-in transformer requires 120 Vac input. Supplying 24 Vac to a 120 Vac unit will result in product damage and will not operate the damper. If 24 Vac is available at the damper location, order the standard HAC.\u003c\/div\u003e\n\u003c!-- CORRECTION 1: PO\/PC warning was absent from the original description.\n       Source document states: \"PO and PC are not interchangeable and cannot be changed\n       after installation. Confirm action before ordering.\" Added with session-consistent\n       softened language (field conversion requires drive disassembly, not practical\n       once installed in a duct run). Same correction applied to HAC, HAC-L, HAC-H, HAC-E. --\u003e\n\u003cdiv class=\"hac12-desc__warning\"\u003e\n\u003cstrong\u003eConfirm PO vs. PC before ordering.\u003c\/strong\u003e The action is set at the factory. A field conversion procedure exists — it requires removing the motor, reversing the spring plate, and remounting the drive — but this is not practical once the unit is installed in a duct run. PO is correct for the vast majority of fresh air intake and make-up air applications. PC is used only when fail-open on power loss is required by the system design.\u003c\/div\u003e\n\u003cdiv class=\"hac12-desc__bullets\"\u003e\n\u003cdiv class=\"hac12-desc__bullet\"\u003e\n\u003cspan class=\"hac12-desc__bullet-check\"\u003e✓\u003c\/span\u003e \u003cspan class=\"hac12-desc__bullet-text\"\u003e\u003cstrong\u003eBuilt-in 120 Vac to 24 Vac transformer\u003c\/strong\u003e — one switched 120 Vac circuit to the damper; no separate transformer to mount, no secondary low-voltage run\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"hac12-desc__bullet\"\u003e\n\u003cspan class=\"hac12-desc__bullet-check\"\u003e✓\u003c\/span\u003e \u003cspan class=\"hac12-desc__bullet-text\"\u003e\u003cstrong\u003eSame spring return operation as the standard HAC\u003c\/strong\u003e — Hansen motor with 24 Vac spring return mechanism internally; same PO\/PC fail-safe behavior\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"hac12-desc__bullet\"\u003e\n\u003cspan class=\"hac12-desc__bullet-check\"\u003e✓\u003c\/span\u003e \u003cspan class=\"hac12-desc__bullet-text\"\u003e\u003cstrong\u003eRetrofit-ready\u003c\/strong\u003e — ideal when a 120 Vac switched circuit is already at the damper location and running new low-voltage wiring through finished walls is impractical\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"hac12-desc__bullet\"\u003e\n\u003cspan class=\"hac12-desc__bullet-check\"\u003e✓\u003c\/span\u003e \u003cspan class=\"hac12-desc__bullet-text\"\u003e\u003cstrong\u003ePO or PC action, end switch available\u003c\/strong\u003e — all factory-installed; relay not available on HAC-12\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"hac12-desc__bullet\"\u003e\n\u003cspan class=\"hac12-desc__bullet-check\"\u003e✓\u003c\/span\u003e \u003cspan class=\"hac12-desc__bullet-text\"\u003e\u003cstrong\u003eCSA certified\u003c\/strong\u003e — complete assembly, Canadian and US installations\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"hac12-desc__bullet\"\u003e\n\u003cspan class=\"hac12-desc__bullet-check\"\u003e✓\u003c\/span\u003e \u003cspan class=\"hac12-desc__bullet-text\"\u003e\u003cstrong\u003e120 Vac variants available\u003c\/strong\u003e — HAC-12H adds 10% heat bypass for zone control; HAC-12L adds factory insulation for cold climate installs\u003c\/span\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"hac12-desc__compare\"\u003e\n\u003cdiv class=\"hac12-desc__compare-card hac12-desc__compare-card--red\"\u003e\n\u003cdiv class=\"hac12-desc__compare-title\"\u003eUse HAC-12 (120 Vac) when…\u003c\/div\u003e\n\u003cdiv class=\"hac12-desc__compare-item\"\u003e\n\u003cspan class=\"hac12-desc__compare-dot--red\"\u003e✓\u003c\/span\u003e\u003cspan class=\"hac12-desc__compare-text\"\u003eOnly 120 Vac is available at the damper location\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"hac12-desc__compare-item\"\u003e\n\u003cspan class=\"hac12-desc__compare-dot--red\"\u003e✓\u003c\/span\u003e\u003cspan class=\"hac12-desc__compare-text\"\u003eDamper controlled from a 120 Vac switch, timer, or line-voltage relay\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"hac12-desc__compare-item\"\u003e\n\u003cspan class=\"hac12-desc__compare-dot--red\"\u003e✓\u003c\/span\u003e\u003cspan class=\"hac12-desc__compare-text\"\u003eRetrofit where running low-voltage wire is impractical or costly\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"hac12-desc__compare-item\"\u003e\n\u003cspan class=\"hac12-desc__compare-dot--red\"\u003e✓\u003c\/span\u003e\u003cspan class=\"hac12-desc__compare-text\"\u003eSimple on\/off control — no ADP furnace fan sequencing required\u003c\/span\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"hac12-desc__compare-card hac12-desc__compare-card--navy\"\u003e\n\u003cdiv class=\"hac12-desc__compare-title\"\u003eUse standard HAC (24 Vac) when…\u003c\/div\u003e\n\u003cdiv class=\"hac12-desc__compare-item\"\u003e\n\u003cspan class=\"hac12-desc__compare-dot--navy\"\u003e→\u003c\/span\u003e\u003cspan class=\"hac12-desc__compare-text\"\u003e24 Vac control circuit is already at the damper location\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"hac12-desc__compare-item\"\u003e\n\u003cspan class=\"hac12-desc__compare-dot--navy\"\u003e→\u003c\/span\u003e\u003cspan class=\"hac12-desc__compare-text\"\u003eADP relay adaptor needed for furnace fan sequencing\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"hac12-desc__compare-item\"\u003e\n\u003cspan class=\"hac12-desc__compare-dot--navy\"\u003e→\u003c\/span\u003e\u003cspan class=\"hac12-desc__compare-text\"\u003eRelay output required from the damper\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"hac12-desc__compare-item\"\u003e\n\u003cspan class=\"hac12-desc__compare-dot--navy\"\u003e→\u003c\/span\u003e\u003cspan class=\"hac12-desc__compare-text\"\u003eSizes 2\" or 3\" required\u003c\/span\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"hac12-desc__specs\"\u003e\n\u003cdiv class=\"hac12-desc__spec hac12-desc__spec--highlight\"\u003e\n\u003cdiv class=\"hac12-desc__spec-label\"\u003eSupply Voltage\u003c\/div\u003e\n\u003cdiv class=\"hac12-desc__spec-value\"\u003e120 Vac — built-in transformer\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"hac12-desc__spec\"\u003e\n\u003cdiv class=\"hac12-desc__spec-label\"\u003eSizes\u003c\/div\u003e\n\u003cdiv class=\"hac12-desc__spec-value\"\u003e4\"–9\"\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"hac12-desc__spec\"\u003e\n\u003cdiv class=\"hac12-desc__spec-label\"\u003eAction\u003c\/div\u003e\n\u003cdiv class=\"hac12-desc__spec-value\"\u003ePO or PC\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"hac12-desc__spec\"\u003e\n\u003cdiv class=\"hac12-desc__spec-label\"\u003eEnd Switch\u003c\/div\u003e\n\u003cdiv class=\"hac12-desc__spec-value\"\u003eOptional (S prefix)\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"hac12-desc__spec\"\u003e\n\u003cdiv class=\"hac12-desc__spec-label\"\u003eCertification\u003c\/div\u003e\n\u003cdiv class=\"hac12-desc__spec-value\"\u003eCSA — complete assembly\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"hac12-desc__spec hac12-desc__spec--amber\"\u003e\n\u003cdiv class=\"hac12-desc__spec-label\"\u003eRelay\u003c\/div\u003e\n\u003cdiv class=\"hac12-desc__spec-value\"\u003eNot available — use standard HAC\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"hac12-desc__variants\"\u003e\n\u003cdiv class=\"hac12-desc__variant\"\u003e\n\u003cdiv class=\"hac12-desc__variant-code\"\u003eHAC-12\u003c\/div\u003e\n\u003cdiv class=\"hac12-desc__variant-desc\"\u003eThis product — fresh air intake and make-up air at 120 Vac sites\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"hac12-desc__variant\"\u003e\n\u003cdiv class=\"hac12-desc__variant-code\"\u003eHAC-12H\u003c\/div\u003e\n\u003cdiv class=\"hac12-desc__variant-desc\"\u003e120 Vac + 10% heat bypass — hot air duct zone control at 120 Vac sites\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"hac12-desc__variant\"\u003e\n\u003cdiv class=\"hac12-desc__variant-code\"\u003eHAC-12L\u003c\/div\u003e\n\u003cdiv class=\"hac12-desc__variant-desc\"\u003e120 Vac + factory insulation — cold climate installs at 120 Vac sites\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c!-- CORRECTION 2: Original note cited ADP-0241-S5A as the model for standard HAC\n       furnace fan sequencing. ADP-0241-S5A appears in the SharePoint source document\n       but is not listed in the 2026 price list. Consistent with corrections applied to\n       HAC, HAC-L, MAC, HAC-E. Specific model removed; general ADP series reference used.\n       Do not reinstate until factory confirms the correct model number. --\u003e\n\u003cdiv class=\"hac12-desc__note\"\u003e\n\u003cstrong\u003eNeed ADP furnace fan sequencing?\u003c\/strong\u003e The ADP relay adaptor series is designed for 24 Vac control circuits and is not directly compatible with the HAC-12's 120 Vac supply. For applications requiring fresh air damper interlock with the furnace fan, use the \u003ca href=\"\/products\/hac-inline-motorized-air-damper-24vac\"\u003estandard 24 Vac HAC\u003c\/a\u003e with the appropriate \u003ca href=\"\/products\/adp-damper-interlock-relay-adaptor\"\u003eADP relay adaptor\u003c\/a\u003e. If only 120 Vac is available and furnace fan sequencing is required, discuss the wiring approach with your controls supplier.\u003c\/div\u003e\n\u003cdiv class=\"hac12-desc__warranty\"\u003e\n\u003csvg style=\"flex-shrink: 0;\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" fill=\"none\" viewbox=\"0 0 24 24\" height=\"20\" width=\"20\"\u003e\n      \u003cpath stroke-linejoin=\"round\" stroke-linecap=\"round\" stroke-width=\"1.8\" stroke=\"#C8102E\" d=\"M12 22s8-4 8-10V5l-8-3-8 3v7c0 6 8 10 8 10z\"\u003e\u003c\/path\u003e\n      \u003cpath stroke-linejoin=\"round\" stroke-linecap=\"round\" stroke-width=\"1.8\" stroke=\"#C8102E\" d=\"M9 12l2 2 4-4\"\u003e\u003c\/path\u003e\n    \u003c\/svg\u003e\n\u003cdiv\u003e\n\u003cdiv class=\"hac12-desc__warranty-text\"\u003e2-year electrical · 10-year mechanical warranty\u003c\/div\u003e\n\u003cdiv class=\"hac12-desc__warranty-sub\"\u003eCSA certified · Made in Canada\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e","brand":"Hoyme Manufacturing","offers":[{"title":"4\" \/ Power Open (PO) \/ Standard (No End Switch)","offer_id":43083281825835,"sku":"HAC-0412-OPO","price":242.0,"currency_code":"CAD","in_stock":true},{"title":"4\" \/ Power Open (PO) \/ End Switch","offer_id":43083283922987,"sku":"HAC-0412-SPO","price":270.0,"currency_code":"CAD","in_stock":true},{"title":"4\" \/ Power Close (PC) \/ Standard (No End Switch)","offer_id":43083283955755,"sku":"HAC-0412-OPC","price":242.0,"currency_code":"CAD","in_stock":true},{"title":"4\" \/ Power Close (PC) \/ End Switch","offer_id":43083283988523,"sku":"HAC-0412-SPC","price":270.0,"currency_code":"CAD","in_stock":true},{"title":"5\" \/ Power Open (PO) \/ Standard (No End Switch)","offer_id":43083281858603,"sku":"HAC-0512-OPO","price":244.0,"currency_code":"CAD","in_stock":true},{"title":"5\" \/ Power Open (PO) \/ End Switch","offer_id":43083284021291,"sku":"HAC-0512-SPO","price":271.0,"currency_code":"CAD","in_stock":true},{"title":"5\" \/ Power Close (PC) \/ Standard (No End Switch)","offer_id":43083284054059,"sku":"HAC-0512-OPC","price":244.0,"currency_code":"CAD","in_stock":true},{"title":"5\" \/ Power Close (PC) \/ End Switch","offer_id":43083284086827,"sku":"HAC-0512-SPC","price":271.0,"currency_code":"CAD","in_stock":true},{"title":"6\" \/ Power Open (PO) \/ Standard (No End Switch)","offer_id":43083281891371,"sku":"HAC-0612-OPO","price":246.0,"currency_code":"CAD","in_stock":true},{"title":"6\" \/ Power Open (PO) \/ End Switch","offer_id":43083284119595,"sku":"HAC-0612-SPO","price":273.0,"currency_code":"CAD","in_stock":true},{"title":"6\" \/ Power Close (PC) \/ Standard (No End Switch)","offer_id":43083284152363,"sku":"HAC-0612-OPC","price":246.0,"currency_code":"CAD","in_stock":true},{"title":"6\" \/ Power Close (PC) \/ End Switch","offer_id":43083284185131,"sku":"HAC-0612-SPC","price":273.0,"currency_code":"CAD","in_stock":true},{"title":"7\" \/ Power Open (PO) \/ Standard (No End Switch)","offer_id":43083281924139,"sku":"HAC-0712-OPO","price":248.0,"currency_code":"CAD","in_stock":true},{"title":"7\" \/ Power Open (PO) \/ End Switch","offer_id":43083284217899,"sku":"HAC-0712-SPO","price":274.0,"currency_code":"CAD","in_stock":true},{"title":"7\" \/ Power Close (PC) \/ Standard (No End Switch)","offer_id":43083284250667,"sku":"HAC-0712-OPC","price":248.0,"currency_code":"CAD","in_stock":true},{"title":"7\" \/ Power Close (PC) \/ End Switch","offer_id":43083284283435,"sku":"HAC-0712-SPC","price":274.0,"currency_code":"CAD","in_stock":true},{"title":"8\" \/ Power Open (PO) \/ Standard (No End Switch)","offer_id":43083281956907,"sku":"HAC-0812-OPO","price":251.0,"currency_code":"CAD","in_stock":true},{"title":"8\" \/ Power Open (PO) \/ End Switch","offer_id":43083284316203,"sku":"HAC-0812-SPO","price":277.0,"currency_code":"CAD","in_stock":true},{"title":"8\" \/ Power Close (PC) \/ Standard (No End Switch)","offer_id":43083284348971,"sku":"HAC-0812-OPC","price":251.0,"currency_code":"CAD","in_stock":true},{"title":"8\" \/ Power Close (PC) \/ End Switch","offer_id":43083284381739,"sku":"HAC-0812-SPC","price":277.0,"currency_code":"CAD","in_stock":true},{"title":"9\" \/ Power Open (PO) \/ Standard (No End Switch)","offer_id":43083281989675,"sku":"HAC-0912-OPO","price":253.0,"currency_code":"CAD","in_stock":true},{"title":"9\" \/ Power Open (PO) \/ End Switch","offer_id":43083284414507,"sku":"HAC-0912-SPO","price":282.0,"currency_code":"CAD","in_stock":true},{"title":"9\" \/ Power Close (PC) \/ Standard (No End Switch)","offer_id":43083284447275,"sku":"HAC-0912-OPC","price":253.0,"currency_code":"CAD","in_stock":true},{"title":"9\" \/ Power Close (PC) \/ End Switch","offer_id":43083284480043,"sku":"HAC-0912-SPC","price":282.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0647\/3459\/3067\/files\/image_86.png?v=1775770337"},{"product_id":"hac-12h-heat-bypass-damper-120vac","title":"HAC-12H Heat Inline Damper — 120 Vac, Built-In Transformer, 10% Heat Bypass, 4\"–9\"","description":"\u003cp\u003e\u003cem\u003eProduct image is representative only. Actual product may differ in appearance depending on size, configuration, and options selected at order.\u003c\/em\u003e\u003c\/p\u003e\n\u003cstyle\u003e\n  .hac12h-desc * { box-sizing: border-box; margin: 0; padding: 0; }\n  .hac12h-desc { font-family: 'Open Sans', sans-serif; color: #001F3F; line-height: 1.6; font-size: 15px; }\n\n  .hac12h-desc__intro { font-size: 15px; line-height: 1.75; color: #374151; margin-bottom: 20px; }\n\n  .hac12h-desc__bullets { display: flex; flex-direction: column; gap: 6px; margin-bottom: 20px; }\n  .hac12h-desc__bullet { display: flex; align-items: flex-start; gap: 10px; }\n  .hac12h-desc__bullet-check { color: #C8102E; font-weight: 700; font-size: 14px; flex-shrink: 0; line-height: 1.6; }\n  .hac12h-desc__bullet-text { font-size: 14px; color: #374151; font-family: 'Open Sans', sans-serif; line-height: 1.6; }\n  .hac12h-desc__bullet-text strong { font-family: 'Montserrat', sans-serif; font-weight: 700; color: #001F3F; }\n\n  .hac12h-desc__dual-warning { background: #fff3f4; border: 2px solid #C8102E; border-radius: 5px; padding: 14px 18px; margin-bottom: 20px; display: flex; flex-direction: column; gap: 8px; }\n  .hac12h-desc__dual-warning-item { display: flex; align-items: flex-start; gap: 10px; font-size: 13.5px; color: #001F3F; font-family: 'Open Sans', sans-serif; line-height: 1.55; }\n  .hac12h-desc__dual-warning-icon { color: #C8102E; font-weight: 800; font-size: 14px; flex-shrink: 0; line-height: 1.55; }\n  .hac12h-desc__dual-warning strong { font-family: 'Montserrat', sans-serif; font-weight: 700; color: #C8102E; }\n\n  .hac12h-desc__warning { background: #fff3f4; border-left: 4px solid #C8102E; border-radius: 0 4px 4px 0; padding: 12px 16px; margin-bottom: 20px; font-size: 13.5px; color: #001F3F; font-family: 'Open Sans', sans-serif; line-height: 1.6; }\n  .hac12h-desc__warning strong { font-family: 'Montserrat', sans-serif; font-weight: 700; color: #C8102E; }\n\n  .hac12h-desc__note { background: #F3F6F8; border-left: 4px solid #001F3F; border-radius: 0 4px 4px 0; padding: 12px 16px; margin-bottom: 20px; font-size: 13.5px; color: #001F3F; font-family: 'Open Sans', sans-serif; line-height: 1.6; }\n  .hac12h-desc__note strong { font-family: 'Montserrat', sans-serif; font-weight: 700; }\n  .hac12h-desc__note a { color: #C8102E; text-decoration: none; font-weight: 600; }\n\n  .hac12h-desc__table-wrap { overflow-x: auto; margin-bottom: 8px; }\n  .hac12h-desc__table { width: 100%; border-collapse: collapse; font-size: 13px; font-family: 'Open Sans', sans-serif; }\n  .hac12h-desc__table th { background: #001F3F; color: #FFFFFF; font-family: 'Montserrat', sans-serif; font-weight: 700; font-size: 11px; text-transform: uppercase; letter-spacing: 0.05em; padding: 9px 14px; text-align: left; white-space: nowrap; }\n  .hac12h-desc__table td { padding: 8px 14px; border-bottom: 1px solid #e2e8f0; color: #001F3F; vertical-align: top; }\n  .hac12h-desc__table tr:last-child td { border-bottom: none; }\n  .hac12h-desc__table tr:nth-child(even) td { background: #f8fafc; }\n  .hac12h-desc__table td:first-child { font-size: 12.5px; }\n  .hac12h-desc__table td:last-child { font-family: 'Montserrat', sans-serif; font-weight: 700; color: #C8102E; font-size: 12.5px; white-space: nowrap; }\n  .hac12h-desc__table tr.hac12h-desc__table-highlight td { background: #F3F6F8; }\n  .hac12h-desc__table tr.hac12h-desc__table-highlight td:last-child { color: #001F3F; }\n  .hac12h-desc__table-footer { font-size: 12px; color: #718096; font-family: 'Open Sans', sans-serif; margin-top: 6px; margin-bottom: 20px; font-style: italic; }\n\n  .hac12h-desc__specs { display: grid; grid-template-columns: repeat(auto-fill, minmax(160px, 1fr)); gap: 8px; margin-bottom: 20px; }\n  .hac12h-desc__spec { background: #F3F6F8; border: 1px solid #e2e8f0; border-radius: 5px; padding: 10px 12px; }\n  .hac12h-desc__spec-label { font-family: 'Montserrat', sans-serif; font-size: 10px; font-weight: 700; text-transform: uppercase; letter-spacing: 0.07em; color: #718096; margin-bottom: 3px; }\n  .hac12h-desc__spec-value { font-family: 'Montserrat', sans-serif; font-size: 12.5px; font-weight: 700; color: #001F3F; line-height: 1.35; }\n  .hac12h-desc__spec--highlight { background: #001F3F; border-color: #001F3F; }\n  .hac12h-desc__spec--highlight .hac12h-desc__spec-label { color: rgba(255,255,255,0.5); }\n  .hac12h-desc__spec--highlight .hac12h-desc__spec-value { color: #FFFFFF; }\n  .hac12h-desc__spec--red { background: #fff3f4; border-color: #C8102E; }\n  .hac12h-desc__spec--red .hac12h-desc__spec-label { color: #C8102E; }\n  .hac12h-desc__spec--red .hac12h-desc__spec-value { color: #C8102E; }\n  .hac12h-desc__spec--amber { background: #fffbeb; border-color: #d97706; }\n  .hac12h-desc__spec--amber .hac12h-desc__spec-label { color: #92400e; }\n  .hac12h-desc__spec--amber .hac12h-desc__spec-value { color: #92400e; }\n\n  .hac12h-desc__warranty { display: flex; align-items: center; gap: 10px; background: #001F3F; border-radius: 5px; padding: 12px 16px; }\n  .hac12h-desc__warranty-text { font-family: 'Montserrat', sans-serif; font-size: 13px; font-weight: 700; color: #FFFFFF; }\n  .hac12h-desc__warranty-sub { font-size: 12px; color: rgba(255,255,255,0.6); font-family: 'Open Sans', sans-serif; margin-top: 2px; }\n\u003c\/style\u003e\n\n\u003cdiv class=\"hac12h-desc\"\u003e\n\n  \u003cp class=\"hac12h-desc__intro\"\u003eThe HAC-12H combines two features in one unit: the 120 Vac built-in transformer of the HAC-12 and the 10% heat bypass blade of the HAC-H. For one specific situation — hot air supply duct zone control on a 120 Vac site. Both conditions must be present to justify this product. If only one applies, one of the single-feature variants is the correct order. CSA certified. Sizes 4\"–9\".\u003c\/p\u003e\n\n  \u003c!-- Dual warning — confirmed accurate against source --\u003e\n  \u003cdiv class=\"hac12h-desc__dual-warning\"\u003e\n    \u003cdiv class=\"hac12h-desc__dual-warning-item\"\u003e\n      \u003cspan class=\"hac12h-desc__dual-warning-icon\"\u003e!\u003c\/span\u003e\n      \u003cspan\u003e\u003cstrong\u003eDo not supply 24 Vac to a HAC-12H.\u003c\/strong\u003e The built-in transformer requires 120 Vac input. Supplying 24 Vac will result in product damage and will not operate the damper.\u003c\/span\u003e\n    \u003c\/div\u003e\n    \u003cdiv class=\"hac12h-desc__dual-warning-item\"\u003e\n      \u003cspan class=\"hac12h-desc__dual-warning-icon\"\u003e!\u003c\/span\u003e\n      \u003cspan\u003e\u003cstrong\u003eDo not install on fresh air intake, make-up air, or ventilation applications.\u003c\/strong\u003e The 10% bypass is permanent and cannot be disabled — outdoor air infiltrates continuously through the bypass whenever the damper is commanded closed.\u003c\/span\u003e\n    \u003c\/div\u003e\n  \u003c\/div\u003e\n\n  \u003c!-- CORRECTION 1: PO\/PC confirmation warning was absent.\n       Source document states: \"Action: PO or PC — specify at order; cannot be changed\n       after installation.\" Same omission corrected on HAC-H and HAC-12. Added with\n       session-consistent softened language. --\u003e\n  \u003cdiv class=\"hac12h-desc__warning\"\u003e\n    \u003cstrong\u003eConfirm PO vs. PC before ordering.\u003c\/strong\u003e The action is set at the factory. A field conversion procedure exists — it requires removing the motor, reversing the spring plate, and remounting the drive — but this is not practical once the unit is installed in a duct run. For most hot air zone control applications PO is correct. PC is used only when the zone must fail open on power loss; confirm with the system designer.\u003c\/div\u003e\n\n  \u003cdiv class=\"hac12h-desc__bullets\"\u003e\n\n    \u003cdiv class=\"hac12h-desc__bullet\"\u003e\n      \u003cspan class=\"hac12h-desc__bullet-check\"\u003e✓\u003c\/span\u003e\n      \u003cspan class=\"hac12h-desc__bullet-text\"\u003e\u003cstrong\u003eBuilt-in 120 Vac to 24 Vac transformer\u003c\/strong\u003e — one switched 120 Vac circuit to the damper; no separate transformer, no low-voltage wiring run required\u003c\/span\u003e\n    \u003c\/div\u003e\n\n    \u003cdiv class=\"hac12h-desc__bullet\"\u003e\n      \u003cspan class=\"hac12h-desc__bullet-check\"\u003e✓\u003c\/span\u003e\n      \u003cspan class=\"hac12h-desc__bullet-text\"\u003e\u003cstrong\u003e10% bypass machined into the blade at the factory\u003c\/strong\u003e — permanent, not field-adjustable; maintains minimum flow through closed zones, prevents high-limit trips on single-speed furnaces\u003c\/span\u003e\n    \u003c\/div\u003e\n\n    \u003cdiv class=\"hac12h-desc__bullet\"\u003e\n      \u003cspan class=\"hac12h-desc__bullet-check\"\u003e✓\u003c\/span\u003e\n      \u003cspan class=\"hac12h-desc__bullet-text\"\u003e\u003cstrong\u003eSame spring return operation as the standard HAC\u003c\/strong\u003e — Hansen motor with 24 Vac spring return internally; same PO\/PC fail-safe behavior\u003c\/span\u003e\n    \u003c\/div\u003e\n\n    \u003cdiv class=\"hac12h-desc__bullet\"\u003e\n      \u003cspan class=\"hac12h-desc__bullet-check\"\u003e✓\u003c\/span\u003e\n      \u003cspan class=\"hac12h-desc__bullet-text\"\u003e\u003cstrong\u003ePO or PC action, end switch available\u003c\/strong\u003e — all factory-installed; relay not available on any 120 Vac motor code variant\u003c\/span\u003e\n    \u003c\/div\u003e\n\n    \u003cdiv class=\"hac12h-desc__bullet\"\u003e\n      \u003cspan class=\"hac12h-desc__bullet-check\"\u003e✓\u003c\/span\u003e\n      \u003cspan class=\"hac12h-desc__bullet-text\"\u003e\u003cstrong\u003eCSA certified\u003c\/strong\u003e — complete assembly, Canadian and US installations\u003c\/span\u003e\n    \u003c\/div\u003e\n\n  \u003c\/div\u003e\n\n  \u003c!-- CORRECTION 2: Multi-condition note added below the decision table.\n       Source states: \"If more than one condition applies — for example, 120 Vac site,\n       hot air duct zone control, AND cold climate location — contact Hoyme for guidance\n       on the appropriate specification.\" This scenario has no product in the standard\n       lineup. A contractor reading only the table would find no matching row and draw\n       a false conclusion. The note directs them to the factory, as the source requires. --\u003e\n  \u003cdiv class=\"hac12h-desc__table-wrap\"\u003e\n    \u003ctable class=\"hac12h-desc__table\"\u003e\n      \u003cthead\u003e\n        \u003ctr\u003e\n          \u003cth\u003eJob Condition\u003c\/th\u003e\n          \u003cth\u003eRight Product\u003c\/th\u003e\n        \u003c\/tr\u003e\n      \u003c\/thead\u003e\n      \u003ctbody\u003e\n        \u003ctr class=\"hac12h-desc__table-highlight\"\u003e\n          \u003ctd\u003e120 Vac supply + hot air duct zone control (bypass needed)\u003c\/td\u003e\n          \u003ctd\u003eHAC-12H — this product\u003c\/td\u003e\n        \u003c\/tr\u003e\n        \u003ctr\u003e\n          \u003ctd\u003e120 Vac supply + fresh air intake or make-up air (full shutoff needed)\u003c\/td\u003e\n          \u003ctd\u003eHAC-12\u003c\/td\u003e\n        \u003c\/tr\u003e\n        \u003ctr\u003e\n          \u003ctd\u003e120 Vac supply + cold climate damper location (insulation needed, no bypass)\u003c\/td\u003e\n          \u003ctd\u003eHAC-12L\u003c\/td\u003e\n        \u003c\/tr\u003e\n        \u003ctr\u003e\n          \u003ctd\u003e24 Vac supply + hot air duct zone control (bypass needed)\u003c\/td\u003e\n          \u003ctd\u003eHAC-H\u003c\/td\u003e\n        \u003c\/tr\u003e\n        \u003ctr\u003e\n          \u003ctd\u003e24 Vac supply + fresh air intake or make-up air\u003c\/td\u003e\n          \u003ctd\u003eHAC (standard)\u003c\/td\u003e\n        \u003c\/tr\u003e\n      \u003c\/tbody\u003e\n    \u003c\/table\u003e\n  \u003c\/div\u003e\n  \u003cp class=\"hac12h-desc__table-footer\"\u003eIf more than one condition applies — for example, 120 Vac site, hot air duct zone control, AND cold climate location — no standard variant covers all conditions. Contact Hoyme Manufacturing for guidance before ordering.\u003c\/p\u003e\n\n  \u003cdiv class=\"hac12h-desc__specs\"\u003e\n    \u003cdiv class=\"hac12h-desc__spec hac12h-desc__spec--highlight\"\u003e\n      \u003cdiv class=\"hac12h-desc__spec-label\"\u003eSupply Voltage\u003c\/div\u003e\n      \u003cdiv class=\"hac12h-desc__spec-value\"\u003e120 Vac — built-in transformer\u003c\/div\u003e\n    \u003c\/div\u003e\n    \u003cdiv class=\"hac12h-desc__spec hac12h-desc__spec--highlight\"\u003e\n      \u003cdiv class=\"hac12h-desc__spec-label\"\u003eBypass\u003c\/div\u003e\n      \u003cdiv class=\"hac12h-desc__spec-value\"\u003e10% — factory machined, permanent\u003c\/div\u003e\n    \u003c\/div\u003e\n    \u003cdiv class=\"hac12h-desc__spec\"\u003e\n      \u003cdiv class=\"hac12h-desc__spec-label\"\u003eSizes\u003c\/div\u003e\n      \u003cdiv class=\"hac12h-desc__spec-value\"\u003e4\"–9\"\u003c\/div\u003e\n    \u003c\/div\u003e\n    \u003cdiv class=\"hac12h-desc__spec\"\u003e\n      \u003cdiv class=\"hac12h-desc__spec-label\"\u003eAction\u003c\/div\u003e\n      \u003cdiv class=\"hac12h-desc__spec-value\"\u003ePO or PC\u003c\/div\u003e\n    \u003c\/div\u003e\n    \u003cdiv class=\"hac12h-desc__spec hac12h-desc__spec--red\"\u003e\n      \u003cdiv class=\"hac12h-desc__spec-label\"\u003eNot Suitable For\u003c\/div\u003e\n      \u003cdiv class=\"hac12h-desc__spec-value\"\u003eFresh air, make-up air, ventilation\u003c\/div\u003e\n    \u003c\/div\u003e\n    \u003cdiv class=\"hac12h-desc__spec hac12h-desc__spec--amber\"\u003e\n      \u003cdiv class=\"hac12h-desc__spec-label\"\u003eRelay\u003c\/div\u003e\n      \u003cdiv class=\"hac12h-desc__spec-value\"\u003eNot available — use HAC-H (24 Vac)\u003c\/div\u003e\n    \u003c\/div\u003e\n  \u003c\/div\u003e\n\n  \u003cdiv class=\"hac12h-desc__note\"\u003e\n    \u003cstrong\u003eNeed relay output or ADP furnace fan sequencing?\u003c\/strong\u003e The 120 Vac motor code does not include relay capability. For zone control applications requiring a relay output or furnace fan interlock, use the \u003ca href=\"\/products\/hac-h-heat-bypass-inline-damper-24vac\"\u003eHAC-H (24 Vac)\u003c\/a\u003e with the relay option and ADP relay adaptor. For 120 Vac sites requiring relay output, discuss the control circuit approach with your wholesaler.\u003c\/div\u003e\n\n  \u003cdiv class=\"hac12h-desc__warranty\"\u003e\n    \u003csvg style=\"flex-shrink: 0;\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" fill=\"none\" viewbox=\"0 0 24 24\" height=\"20\" width=\"20\"\u003e\n      \u003cpath stroke-linejoin=\"round\" stroke-linecap=\"round\" stroke-width=\"1.8\" stroke=\"#C8102E\" d=\"M12 22s8-4 8-10V5l-8-3-8 3v7c0 6 8 10 8 10z\"\u003e\u003c\/path\u003e\n      \u003cpath stroke-linejoin=\"round\" stroke-linecap=\"round\" stroke-width=\"1.8\" stroke=\"#C8102E\" d=\"M9 12l2 2 4-4\"\u003e\u003c\/path\u003e\n    \u003c\/svg\u003e\n    \u003cdiv\u003e\n      \u003cdiv class=\"hac12h-desc__warranty-text\"\u003e2-year electrical  ·  10-year mechanical warranty\u003c\/div\u003e\n      \u003cdiv class=\"hac12h-desc__warranty-sub\"\u003eCSA certified  ·  Made in Canada\u003c\/div\u003e\n    \u003c\/div\u003e\n  \u003c\/div\u003e\n\n\u003c\/div\u003e","brand":"Hoyme Manufacturing","offers":[{"title":"4\" \/ Power Open (PO) \/ Standard (No End Switch)","offer_id":43083295260715,"sku":"HAC-0412-OPO-H","price":274.0,"currency_code":"CAD","in_stock":true},{"title":"4\" \/ Power Open (PO) \/ End Switch","offer_id":43083295293483,"sku":"HAC-0412-SPO-H","price":300.0,"currency_code":"CAD","in_stock":true},{"title":"4\" \/ Power Close (PC) \/ Standard (No End Switch)","offer_id":43083295326251,"sku":"HAC-0412-OPC-H","price":274.0,"currency_code":"CAD","in_stock":true},{"title":"4\" \/ Power Close (PC) \/ End Switch","offer_id":43083295359019,"sku":"HAC-0412-SPC-H","price":300.0,"currency_code":"CAD","in_stock":true},{"title":"5\" \/ Power Open (PO) \/ Standard (No End Switch)","offer_id":43083295391787,"sku":"HAC-0512-OPO-H","price":276.0,"currency_code":"CAD","in_stock":true},{"title":"5\" \/ Power Open (PO) \/ End Switch","offer_id":43083295424555,"sku":"HAC-0512-SPO-H","price":301.0,"currency_code":"CAD","in_stock":true},{"title":"5\" \/ Power Close (PC) \/ Standard (No End Switch)","offer_id":43083295457323,"sku":"HAC-0512-OPC-H","price":276.0,"currency_code":"CAD","in_stock":true},{"title":"5\" \/ Power Close (PC) \/ End Switch","offer_id":43083295490091,"sku":"HAC-0512-SPC-H","price":301.0,"currency_code":"CAD","in_stock":true},{"title":"6\" \/ Power Open (PO) \/ Standard (No End Switch)","offer_id":43083295522859,"sku":"HAC-0612-OPO-H","price":278.0,"currency_code":"CAD","in_stock":true},{"title":"6\" \/ Power Open (PO) \/ End Switch","offer_id":43083295555627,"sku":"HAC-0612-SPO-H","price":304.0,"currency_code":"CAD","in_stock":true},{"title":"6\" \/ Power Close (PC) \/ Standard (No End Switch)","offer_id":43083295588395,"sku":"HAC-0612-OPC-H","price":278.0,"currency_code":"CAD","in_stock":true},{"title":"6\" \/ Power Close (PC) \/ End Switch","offer_id":43083295621163,"sku":"HAC-0612-SPC-H","price":304.0,"currency_code":"CAD","in_stock":true},{"title":"7\" \/ Power Open (PO) \/ Standard (No End Switch)","offer_id":43083295653931,"sku":"HAC-0712-OPO-H","price":279.0,"currency_code":"CAD","in_stock":true},{"title":"7\" \/ Power Open (PO) \/ End Switch","offer_id":43083295686699,"sku":"HAC-0712-SPO-H","price":305.0,"currency_code":"CAD","in_stock":true},{"title":"7\" \/ Power Close (PC) \/ Standard (No End Switch)","offer_id":43083295719467,"sku":"HAC-0712-OPC-H","price":279.0,"currency_code":"CAD","in_stock":true},{"title":"7\" \/ Power Close (PC) \/ End Switch","offer_id":43083295752235,"sku":"HAC-0712-SPC-H","price":305.0,"currency_code":"CAD","in_stock":true},{"title":"8\" \/ Power Open (PO) \/ Standard (No End Switch)","offer_id":43083295785003,"sku":"HAC-0812-OPO-H","price":282.0,"currency_code":"CAD","in_stock":true},{"title":"8\" \/ Power Open (PO) \/ End Switch","offer_id":43083295817771,"sku":"HAC-0812-SPO-H","price":309.0,"currency_code":"CAD","in_stock":true},{"title":"8\" \/ Power Close (PC) \/ Standard (No End Switch)","offer_id":43083295850539,"sku":"HAC-0812-OPC-H","price":282.0,"currency_code":"CAD","in_stock":true},{"title":"8\" \/ Power Close (PC) \/ End Switch","offer_id":43083295883307,"sku":"HAC-0812-SPC-H","price":309.0,"currency_code":"CAD","in_stock":true},{"title":"9\" \/ Power Open (PO) \/ Standard (No End Switch)","offer_id":43083295916075,"sku":"HAC-0912-OPO-H","price":286.0,"currency_code":"CAD","in_stock":true},{"title":"9\" \/ Power Open (PO) \/ End Switch","offer_id":43083295948843,"sku":"HAC-0912-SPO-H","price":314.0,"currency_code":"CAD","in_stock":true},{"title":"9\" \/ Power Close (PC) \/ Standard (No End Switch)","offer_id":43083295981611,"sku":"HAC-0912-OPC-H","price":286.0,"currency_code":"CAD","in_stock":true},{"title":"9\" \/ Power Close (PC) \/ End Switch","offer_id":43083296014379,"sku":"HAC-0912-SPC-H","price":314.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0647\/3459\/3067\/files\/image_85.png?v=1775770127"},{"product_id":"hac50-51-inline-damper-quarter-turn-24vac","title":"HAC-50 \/ HAC-51 Inline Air Control Damper — CSA Certified, 24 Vac, 6\"–14\", Quarter-Turn ¼\" Drive","description":"\u003cp\u003e\u003cem\u003eProduct image is representative only. Actual product may differ in appearance depending on size, configuration, and options selected at order.\u003c\/em\u003e\u003c\/p\u003e\n\u003cstyle\u003e\n  .hac50-desc * { box-sizing: border-box; margin: 0; padding: 0; }\n  .hac50-desc { font-family: 'Open Sans', sans-serif; color: #001F3F; line-height: 1.6; font-size: 15px; }\n\n  .hac50-desc__intro { font-size: 15px; line-height: 1.75; color: #374151; margin-bottom: 20px; }\n\n  .hac50-desc__bullets { display: flex; flex-direction: column; gap: 6px; margin-bottom: 20px; }\n  .hac50-desc__bullet { display: flex; align-items: flex-start; gap: 10px; }\n  .hac50-desc__bullet-check { color: #C8102E; font-weight: 700; font-size: 14px; flex-shrink: 0; line-height: 1.6; }\n  .hac50-desc__bullet-text { font-size: 14px; color: #374151; font-family: 'Open Sans', sans-serif; line-height: 1.6; }\n  .hac50-desc__bullet-text strong { font-family: 'Montserrat', sans-serif; font-weight: 700; color: #001F3F; }\n\n  .hac50-desc__warning { background: #fff3f4; border-left: 4px solid #C8102E; border-radius: 0 4px 4px 0; padding: 12px 16px; margin-bottom: 20px; font-size: 13.5px; color: #001F3F; font-family: 'Open Sans', sans-serif; line-height: 1.6; }\n  .hac50-desc__warning strong { font-family: 'Montserrat', sans-serif; font-weight: 700; color: #C8102E; }\n\n  .hac50-desc__note { background: #F3F6F8; border-left: 4px solid #001F3F; border-radius: 0 4px 4px 0; padding: 12px 16px; margin-bottom: 20px; font-size: 13.5px; color: #001F3F; font-family: 'Open Sans', sans-serif; line-height: 1.6; }\n  .hac50-desc__note strong { font-family: 'Montserrat', sans-serif; font-weight: 700; }\n  .hac50-desc__note a { color: #C8102E; text-decoration: none; font-weight: 600; }\n\n  .hac50-desc__compare { display: grid; grid-template-columns: 1fr 1fr; gap: 8px; margin-bottom: 20px; }\n  .hac50-desc__compare-card { background: #F3F6F8; border: 1px solid #e2e8f0; border-radius: 5px; padding: 14px 16px; }\n  .hac50-desc__compare-card--red { border-top: 3px solid #C8102E; }\n  .hac50-desc__compare-card--navy { border-top: 3px solid #001F3F; }\n  .hac50-desc__compare-title { font-family: 'Montserrat', sans-serif; font-size: 14px; font-weight: 800; color: #001F3F; margin-bottom: 10px; }\n  .hac50-desc__compare-item { display: flex; align-items: flex-start; gap: 7px; margin-bottom: 5px; }\n  .hac50-desc__compare-item:last-child { margin-bottom: 0; }\n  .hac50-desc__compare-dot--red { color: #C8102E; font-weight: 700; font-size: 13px; flex-shrink: 0; line-height: 1.5; }\n  .hac50-desc__compare-dot--navy { color: #001F3F; font-weight: 700; font-size: 13px; flex-shrink: 0; line-height: 1.5; }\n  .hac50-desc__compare-text { font-size: 12.5px; color: #374151; font-family: 'Open Sans', sans-serif; line-height: 1.45; }\n\n  .hac50-desc__table-wrap { overflow-x: auto; margin-bottom: 20px; }\n  .hac50-desc__table { width: 100%; border-collapse: collapse; font-size: 12.5px; font-family: 'Open Sans', sans-serif; }\n  .hac50-desc__table th { background: #001F3F; color: #FFFFFF; font-family: 'Montserrat', sans-serif; font-weight: 700; font-size: 10.5px; text-transform: uppercase; letter-spacing: 0.05em; padding: 8px 12px; text-align: left; white-space: nowrap; }\n  .hac50-desc__table td { padding: 7px 12px; border-bottom: 1px solid #e2e8f0; color: #001F3F; vertical-align: top; }\n  .hac50-desc__table tr:last-child td { border-bottom: none; }\n  .hac50-desc__table tr:nth-child(even) td { background: #f8fafc; }\n  .hac50-desc__table td:first-child { font-family: 'Montserrat', sans-serif; font-weight: 700; color: #C8102E; }\n  .hac50-desc__table-note { font-size: 11.5px; color: #718096; font-family: 'Open Sans', sans-serif; margin-top: 6px; font-style: italic; }\n\n  .hac50-desc__specs { display: grid; grid-template-columns: repeat(auto-fill, minmax(160px, 1fr)); gap: 8px; margin-bottom: 20px; }\n  .hac50-desc__spec { background: #F3F6F8; border: 1px solid #e2e8f0; border-radius: 5px; padding: 10px 12px; }\n  .hac50-desc__spec-label { font-family: 'Montserrat', sans-serif; font-size: 10px; font-weight: 700; text-transform: uppercase; letter-spacing: 0.07em; color: #718096; margin-bottom: 3px; }\n  .hac50-desc__spec-value { font-family: 'Montserrat', sans-serif; font-size: 12.5px; font-weight: 700; color: #001F3F; line-height: 1.35; }\n  .hac50-desc__spec--highlight { background: #001F3F; border-color: #001F3F; }\n  .hac50-desc__spec--highlight .hac50-desc__spec-label { color: rgba(255,255,255,0.5); }\n  .hac50-desc__spec--highlight .hac50-desc__spec-value { color: #FFFFFF; }\n  .hac50-desc__spec--amber { background: #fffbeb; border-color: #d97706; }\n  .hac50-desc__spec--amber .hac50-desc__spec-label { color: #92400e; }\n  .hac50-desc__spec--amber .hac50-desc__spec-value { color: #92400e; }\n\n  .hac50-desc__warranty { display: flex; align-items: center; gap: 10px; background: #001F3F; border-radius: 5px; padding: 12px 16px; }\n  .hac50-desc__warranty-text { font-family: 'Montserrat', sans-serif; font-size: 13px; font-weight: 700; color: #FFFFFF; }\n  .hac50-desc__warranty-sub { font-size: 12px; color: rgba(255,255,255,0.6); font-family: 'Open Sans', sans-serif; margin-top: 2px; }\n\n  @media (max-width: 480px) {\n    .hac50-desc__compare { grid-template-columns: 1fr; }\n  }\n\u003c\/style\u003e\n\n\u003cdiv class=\"hac50-desc\"\u003e\n\n  \u003cp class=\"hac50-desc__intro\"\u003eThe standard HAC option set scaled to 6\"–14\" round duct. Quarter-turn actuator on a ¼\" drive shaft — same spring return fail-safe, same PO\/PC configuration, same end switch and relay options as the standard HAC, rated for the torque demands of larger blade areas. CSA certified. HAC-50 and HAC-51 are the same product — the only difference is whether the relay is optional (HAC-50) or standard on every unit (HAC-51).\u003c\/p\u003e\n\n  \u003cdiv class=\"hac50-desc__warning\"\u003e\n    \u003cstrong\u003eConfirm PO vs. PC before ordering.\u003c\/strong\u003e The action is factory-set and cannot be changed after installation. PO is correct for fresh air intake and make-up air — duct seals when the system is off. PC is used only when fail-open on power loss is required. Note: 7\" is not available in this series — use the standard HAC (Hoyme drive, available to 9\") for 7\" applications.\u003c\/div\u003e\n\n  \u003cdiv class=\"hac50-desc__bullets\"\u003e\n\n    \u003cdiv class=\"hac50-desc__bullet\"\u003e\n      \u003cspan class=\"hac50-desc__bullet-check\"\u003e✓\u003c\/span\u003e\n      \u003cspan class=\"hac50-desc__bullet-text\"\u003e\u003cstrong\u003eQuarter-turn ¼\" drive shaft actuator\u003c\/strong\u003e — rated for the torque requirements of 6\"–14\" blade areas under duct static pressure conditions where the standard Hoyme drive is not\u003c\/span\u003e\n    \u003c\/div\u003e\n\n    \u003cdiv class=\"hac50-desc__bullet\"\u003e\n      \u003cspan class=\"hac50-desc__bullet-check\"\u003e✓\u003c\/span\u003e\n      \u003cspan class=\"hac50-desc__bullet-text\"\u003e\u003cstrong\u003eSame spring return fail-safe as the standard HAC\u003c\/strong\u003e — blade springs to fail-safe position on power loss regardless of duct pressure; PO or PC to suit the application\u003c\/span\u003e\n    \u003c\/div\u003e\n\n    \u003cdiv class=\"hac50-desc__bullet\"\u003e\n      \u003cspan class=\"hac50-desc__bullet-check\"\u003e✓\u003c\/span\u003e\n      \u003cspan class=\"hac50-desc__bullet-text\"\u003e\u003cstrong\u003eFull option set available on all sizes\u003c\/strong\u003e — end switch, relay, heat bypass (-H), insulated body (-L); all factory-installed\u003c\/span\u003e\n    \u003c\/div\u003e\n\n    \u003cdiv class=\"hac50-desc__bullet\"\u003e\n      \u003cspan class=\"hac50-desc__bullet-check\"\u003e✓\u003c\/span\u003e\n      \u003cspan class=\"hac50-desc__bullet-text\"\u003e\u003cstrong\u003e¼\" drive shaft — industry standard interface\u003c\/strong\u003e — actuator replacement not limited to a single proprietary part\u003c\/span\u003e\n    \u003c\/div\u003e\n\n    \u003cdiv class=\"hac50-desc__bullet\"\u003e\n      \u003cspan class=\"hac50-desc__bullet-check\"\u003e✓\u003c\/span\u003e\n      \u003cspan class=\"hac50-desc__bullet-text\"\u003e\u003cstrong\u003eCSA certified\u003c\/strong\u003e — complete assembly, Canadian and US installations\u003c\/span\u003e\n    \u003c\/div\u003e\n\n    \u003cdiv class=\"hac50-desc__bullet\"\u003e\n      \u003cspan class=\"hac50-desc__bullet-check\"\u003e✓\u003c\/span\u003e\n      \u003cspan class=\"hac50-desc__bullet-text\"\u003e\u003cstrong\u003eSizes above 14\"?\u003c\/strong\u003e — see HAC-40 (Belimo TFB24, 6\"–20\") or the HAC Belimo series for modulating and floating point control\u003c\/span\u003e\n    \u003c\/div\u003e\n\n  \u003c\/div\u003e\n\n  \u003cdiv class=\"hac50-desc__compare\"\u003e\n    \u003cdiv class=\"hac50-desc__compare-card hac50-desc__compare-card--red\"\u003e\n      \u003cdiv class=\"hac50-desc__compare-title\"\u003eHAC-50\u003c\/div\u003e\n      \u003cdiv class=\"hac50-desc__compare-item\"\u003e\n        \u003cspan class=\"hac50-desc__compare-dot--red\"\u003e✓\u003c\/span\u003e\u003cspan class=\"hac50-desc__compare-text\"\u003eRelay optional — add when needed on specific units\u003c\/span\u003e\n      \u003c\/div\u003e\n      \u003cdiv class=\"hac50-desc__compare-item\"\u003e\n        \u003cspan class=\"hac50-desc__compare-dot--red\"\u003e✓\u003c\/span\u003e\u003cspan class=\"hac50-desc__compare-text\"\u003eUse when relay is the exception — most units don't need it\u003c\/span\u003e\n      \u003c\/div\u003e\n      \u003cdiv class=\"hac50-desc__compare-item\"\u003e\n        \u003cspan class=\"hac50-desc__compare-dot--red\"\u003e✓\u003c\/span\u003e\u003cspan class=\"hac50-desc__compare-text\"\u003eCleaner ordering when relay-free is the default configuration\u003c\/span\u003e\n      \u003c\/div\u003e\n    \u003c\/div\u003e\n    \u003cdiv class=\"hac50-desc__compare-card hac50-desc__compare-card--navy\"\u003e\n      \u003cdiv class=\"hac50-desc__compare-title\"\u003eHAC-51\u003c\/div\u003e\n      \u003cdiv class=\"hac50-desc__compare-item\"\u003e\n        \u003cspan class=\"hac50-desc__compare-dot--navy\"\u003e→\u003c\/span\u003e\u003cspan class=\"hac50-desc__compare-text\"\u003eRelay standard — included on every unit automatically\u003c\/span\u003e\n      \u003c\/div\u003e\n      \u003cdiv class=\"hac50-desc__compare-item\"\u003e\n        \u003cspan class=\"hac50-desc__compare-dot--navy\"\u003e→\u003c\/span\u003e\u003cspan class=\"hac50-desc__compare-text\"\u003eUse when relay is required on all units — simplifies ordering on multi-zone systems\u003c\/span\u003e\n      \u003c\/div\u003e\n      \u003cdiv class=\"hac50-desc__compare-item\"\u003e\n        \u003cspan class=\"hac50-desc__compare-dot--navy\"\u003e→\u003c\/span\u003e\u003cspan class=\"hac50-desc__compare-text\"\u003eSpecify size, action, end switch — relay is just there\u003c\/span\u003e\n      \u003c\/div\u003e\n    \u003c\/div\u003e\n  \u003c\/div\u003e\n\n  \u003cdiv class=\"hac50-desc__table-wrap\"\u003e\n    \u003ctable class=\"hac50-desc__table\"\u003e\n      \u003cthead\u003e\n        \u003ctr\u003e\n          \u003cth\u003eSize\u003c\/th\u003e\n          \u003cth\u003eHAC-50 (relay optional)\u003c\/th\u003e\n          \u003cth\u003eHAC-51 (relay standard)\u003c\/th\u003e\n          \u003cth\u003eActuator\u003c\/th\u003e\n        \u003c\/tr\u003e\n      \u003c\/thead\u003e\n      \u003ctbody\u003e\n        \u003ctr\u003e\n\u003ctd\u003e6\"\u003c\/td\u003e\n\u003ctd\u003eHAC-0650-xxx\u003c\/td\u003e\n\u003ctd\u003eHAC-0651-xxx\u003c\/td\u003e\n\u003ctd\u003eQuarter-turn, ¼\" drive\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003ctr\u003e\n\u003ctd\u003e8\"\u003c\/td\u003e\n\u003ctd\u003eHAC-0850-xxx\u003c\/td\u003e\n\u003ctd\u003eHAC-0851-xxx\u003c\/td\u003e\n\u003ctd\u003eQuarter-turn, ¼\" drive\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003ctr\u003e\n\u003ctd\u003e9\"\u003c\/td\u003e\n\u003ctd\u003eHAC-0950-xxx\u003c\/td\u003e\n\u003ctd\u003eHAC-0951-xxx\u003c\/td\u003e\n\u003ctd\u003eQuarter-turn, ¼\" drive\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003ctr\u003e\n\u003ctd\u003e10\"\u003c\/td\u003e\n\u003ctd\u003eHAC-1050-xxx\u003c\/td\u003e\n\u003ctd\u003eHAC-1051-xxx\u003c\/td\u003e\n\u003ctd\u003eQuarter-turn, ¼\" drive\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003ctr\u003e\n\u003ctd\u003e12\"\u003c\/td\u003e\n\u003ctd\u003eHAC-1250-xxx\u003c\/td\u003e\n\u003ctd\u003eHAC-1251-xxx\u003c\/td\u003e\n\u003ctd\u003eQuarter-turn, ¼\" drive\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003ctr\u003e\n\u003ctd\u003e14\"\u003c\/td\u003e\n\u003ctd\u003eHAC-1450-xxx\u003c\/td\u003e\n\u003ctd\u003eHAC-1451-xxx\u003c\/td\u003e\n\u003ctd\u003eQuarter-turn, ¼\" drive\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003c\/tbody\u003e\n    \u003c\/table\u003e\n    \u003cdiv class=\"hac50-desc__table-note\"\u003e7\" is not available in this series — use the standard HAC (Hoyme drive, available to 9\") for 7\" applications.\u003c\/div\u003e\n  \u003c\/div\u003e\n\n  \u003cdiv class=\"hac50-desc__specs\"\u003e\n    \u003cdiv class=\"hac50-desc__spec hac50-desc__spec--highlight\"\u003e\n      \u003cdiv class=\"hac50-desc__spec-label\"\u003eActuator\u003c\/div\u003e\n      \u003cdiv class=\"hac50-desc__spec-value\"\u003eQuarter-turn — ¼\" drive shaft\u003c\/div\u003e\n    \u003c\/div\u003e\n    \u003cdiv class=\"hac50-desc__spec\"\u003e\n      \u003cdiv class=\"hac50-desc__spec-label\"\u003eSizes\u003c\/div\u003e\n      \u003cdiv class=\"hac50-desc__spec-value\"\u003e6\", 8\", 9\", 10\", 12\", 14\"\u003c\/div\u003e\n    \u003c\/div\u003e\n    \u003cdiv class=\"hac50-desc__spec\"\u003e\n      \u003cdiv class=\"hac50-desc__spec-label\"\u003eVoltage\u003c\/div\u003e\n      \u003cdiv class=\"hac50-desc__spec-value\"\u003e24 Vac\u003c\/div\u003e\n    \u003c\/div\u003e\n    \u003cdiv class=\"hac50-desc__spec\"\u003e\n      \u003cdiv class=\"hac50-desc__spec-label\"\u003eAction\u003c\/div\u003e\n      \u003cdiv class=\"hac50-desc__spec-value\"\u003ePO or PC\u003c\/div\u003e\n    \u003c\/div\u003e\n    \u003cdiv class=\"hac50-desc__spec\"\u003e\n      \u003cdiv class=\"hac50-desc__spec-label\"\u003eCertification\u003c\/div\u003e\n      \u003cdiv class=\"hac50-desc__spec-value\"\u003eCSA — complete assembly\u003c\/div\u003e\n    \u003c\/div\u003e\n    \u003cdiv class=\"hac50-desc__spec hac50-desc__spec--amber\"\u003e\n      \u003cdiv class=\"hac50-desc__spec-label\"\u003e7\" Available?\u003c\/div\u003e\n      \u003cdiv class=\"hac50-desc__spec-value\"\u003eNo — use standard HAC\u003c\/div\u003e\n    \u003c\/div\u003e\n  \u003c\/div\u003e\n\n  \u003c!-- CORRECTION: ADP-0241-S5A appears in the SharePoint source document but is not\n       listed in the 2026 price list. Specific model reference removed, consistent with\n       corrections applied to HAC, HAC-L, MAC, HAC-E, HAC-12.\n       Do not reinstate until factory confirms the correct model number. --\u003e\n  \u003cdiv class=\"hac50-desc__note\"\u003e\n    \u003cstrong\u003eNeed ADP furnace fan sequencing?\u003c\/strong\u003e For ventilation code compliance — fresh air interlocked with furnace fan — use an ADP relay adaptor with the end switch variant (SPO or SPC). The ADP opens the damper first, confirms position via end switch, then energizes the furnace fan. See the \u003ca href=\"\/products\/adp-damper-interlock-relay-adaptor\"\u003eADP series\u003c\/a\u003e for the correct model for your application. For sizes above 14\" see \u003ca href=\"\/products\/hac-belimo-tfb24-inline-damper-24vac\"\u003eHAC-40 (Belimo TFB24)\u003c\/a\u003e.\u003c\/div\u003e\n\n  \u003cdiv class=\"hac50-desc__warranty\"\u003e\n    \u003csvg style=\"flex-shrink: 0;\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" fill=\"none\" viewbox=\"0 0 24 24\" height=\"20\" width=\"20\"\u003e\n      \u003cpath stroke-linejoin=\"round\" stroke-linecap=\"round\" stroke-width=\"1.8\" stroke=\"#C8102E\" d=\"M12 22s8-4 8-10V5l-8-3-8 3v7c0 6 8 10 8 10z\"\u003e\u003c\/path\u003e\n      \u003cpath stroke-linejoin=\"round\" stroke-linecap=\"round\" stroke-width=\"1.8\" stroke=\"#C8102E\" d=\"M9 12l2 2 4-4\"\u003e\u003c\/path\u003e\n    \u003c\/svg\u003e\n    \u003cdiv\u003e\n      \u003cdiv class=\"hac50-desc__warranty-text\"\u003e2-year electrical  ·  10-year mechanical warranty\u003c\/div\u003e\n      \u003cdiv class=\"hac50-desc__warranty-sub\"\u003eCSA certified  ·  Made in Canada  ·  ¼\" drive shaft — industry-standard actuator interface\u003c\/div\u003e\n    \u003c\/div\u003e\n  \u003c\/div\u003e\n\n\u003c\/div\u003e","brand":"Hoyme Manufacturing","offers":[{"title":"6\" \/ Power Open (PO) \/ Standard (No Relay \/ No End Switch)","offer_id":43085330546731,"sku":"HAC-0650-OPO","price":256.0,"currency_code":"CAD","in_stock":true},{"title":"6\" \/ Power Open (PO) \/ End Switch (No Relay)","offer_id":43085330579499,"sku":"HAC-0650-SPO","price":285.0,"currency_code":"CAD","in_stock":true},{"title":"6\" \/ Power Open (PO) \/ Relay (No End Switch)","offer_id":43085330612267,"sku":"HAC-0651-OPO","price":308.0,"currency_code":"CAD","in_stock":true},{"title":"6\" \/ Power Open (PO) \/ Relay + End Switch","offer_id":43085330645035,"sku":"HAC-0651-SPO","price":336.0,"currency_code":"CAD","in_stock":true},{"title":"6\" \/ Power Close (PC) \/ Standard (No Relay \/ No End Switch)","offer_id":43085330677803,"sku":"HAC-0650-OPC","price":256.0,"currency_code":"CAD","in_stock":true},{"title":"6\" \/ Power Close (PC) \/ End Switch (No Relay)","offer_id":43085330710571,"sku":"HAC-0650-SPC","price":285.0,"currency_code":"CAD","in_stock":true},{"title":"6\" \/ Power Close (PC) \/ Relay (No End Switch)","offer_id":43085330743339,"sku":"HAC-0651-OPC","price":308.0,"currency_code":"CAD","in_stock":true},{"title":"6\" \/ Power Close (PC) \/ Relay + End Switch","offer_id":43085330776107,"sku":"HAC-0651-SPC","price":336.0,"currency_code":"CAD","in_stock":true},{"title":"8\" \/ Power Open (PO) \/ Standard (No Relay \/ No End Switch)","offer_id":43085330808875,"sku":"HAC-0850-OPO","price":259.0,"currency_code":"CAD","in_stock":true},{"title":"8\" \/ Power Open (PO) \/ End Switch (No Relay)","offer_id":43085330841643,"sku":"HAC-0850-SPO","price":287.0,"currency_code":"CAD","in_stock":true},{"title":"8\" \/ Power Open (PO) \/ Relay (No End Switch)","offer_id":43085330874411,"sku":"HAC-0851-OPO","price":310.0,"currency_code":"CAD","in_stock":true},{"title":"8\" \/ Power Open (PO) \/ Relay + End Switch","offer_id":43085330907179,"sku":"HAC-0851-SPO","price":338.0,"currency_code":"CAD","in_stock":true},{"title":"8\" \/ Power Close (PC) \/ Standard (No Relay \/ No End Switch)","offer_id":43085330939947,"sku":"HAC-0850-OPC","price":259.0,"currency_code":"CAD","in_stock":true},{"title":"8\" \/ Power Close (PC) \/ End Switch (No Relay)","offer_id":43085330972715,"sku":"HAC-0850-SPC","price":287.0,"currency_code":"CAD","in_stock":true},{"title":"8\" \/ Power Close (PC) \/ Relay (No End Switch)","offer_id":43085331005483,"sku":"HAC-0851-OPC","price":310.0,"currency_code":"CAD","in_stock":true},{"title":"8\" \/ Power Close (PC) \/ Relay + End Switch","offer_id":43085331038251,"sku":"HAC-0851-SPC","price":338.0,"currency_code":"CAD","in_stock":true},{"title":"9\" \/ Power Open (PO) \/ Standard (No Relay \/ No End Switch)","offer_id":43085331071019,"sku":"HAC-0950-OPO","price":353.0,"currency_code":"CAD","in_stock":true},{"title":"9\" \/ Power Open (PO) \/ End Switch (No Relay)","offer_id":43085331103787,"sku":"HAC-0950-SPO","price":378.0,"currency_code":"CAD","in_stock":true},{"title":"9\" \/ Power Open (PO) \/ Relay (No End Switch)","offer_id":43085331136555,"sku":"HAC-0951-OPO","price":402.0,"currency_code":"CAD","in_stock":true},{"title":"9\" \/ Power Open (PO) \/ Relay + End Switch","offer_id":43085331169323,"sku":"HAC-0951-SPO","price":431.0,"currency_code":"CAD","in_stock":true},{"title":"9\" \/ Power Close (PC) \/ Standard (No Relay \/ No End Switch)","offer_id":43085331202091,"sku":"HAC-0950-OPC","price":353.0,"currency_code":"CAD","in_stock":true},{"title":"9\" \/ Power Close (PC) \/ End Switch (No Relay)","offer_id":43085331234859,"sku":"HAC-0950-SPC","price":378.0,"currency_code":"CAD","in_stock":true},{"title":"9\" \/ Power Close (PC) \/ Relay (No End Switch)","offer_id":43085331267627,"sku":"HAC-0951-OPC","price":402.0,"currency_code":"CAD","in_stock":true},{"title":"9\" \/ Power Close (PC) \/ Relay + End Switch","offer_id":43085331300395,"sku":"HAC-0951-SPC","price":431.0,"currency_code":"CAD","in_stock":true},{"title":"10\" \/ Power Open (PO) \/ Standard (No Relay \/ No End Switch)","offer_id":43085331333163,"sku":"HAC-1050-OPO","price":370.0,"currency_code":"CAD","in_stock":true},{"title":"10\" \/ Power Open (PO) \/ End Switch (No Relay)","offer_id":43085331365931,"sku":"HAC-1050-SPO","price":397.0,"currency_code":"CAD","in_stock":true},{"title":"10\" \/ Power Open (PO) \/ Relay (No End Switch)","offer_id":43085331398699,"sku":"HAC-1051-OPO","price":422.0,"currency_code":"CAD","in_stock":true},{"title":"10\" \/ Power Open (PO) \/ Relay + End Switch","offer_id":43085331431467,"sku":"HAC-1051-SPO","price":448.0,"currency_code":"CAD","in_stock":true},{"title":"10\" \/ Power Close (PC) \/ Standard (No Relay \/ No End Switch)","offer_id":43085331464235,"sku":"HAC-1050-OPC","price":370.0,"currency_code":"CAD","in_stock":true},{"title":"10\" \/ Power Close (PC) \/ End Switch (No Relay)","offer_id":43085331497003,"sku":"HAC-1050-SPC","price":397.0,"currency_code":"CAD","in_stock":true},{"title":"10\" \/ Power Close (PC) \/ Relay (No End Switch)","offer_id":43085331529771,"sku":"HAC-1051-OPC","price":422.0,"currency_code":"CAD","in_stock":true},{"title":"10\" \/ Power Close (PC) \/ Relay + End Switch","offer_id":43085331562539,"sku":"HAC-1051-SPC","price":448.0,"currency_code":"CAD","in_stock":true},{"title":"12\" \/ Power Open (PO) \/ Standard (No Relay \/ No End Switch)","offer_id":43085331595307,"sku":"HAC-1250-OPO","price":378.0,"currency_code":"CAD","in_stock":true},{"title":"12\" \/ Power Open (PO) \/ End Switch (No Relay)","offer_id":43085331628075,"sku":"HAC-1250-SPO","price":408.0,"currency_code":"CAD","in_stock":true},{"title":"12\" \/ Power Open (PO) \/ Relay (No End Switch)","offer_id":43085331660843,"sku":"HAC-1251-OPO","price":431.0,"currency_code":"CAD","in_stock":true},{"title":"12\" \/ Power Open (PO) \/ Relay + End Switch","offer_id":43085331693611,"sku":"HAC-1251-SPO","price":458.0,"currency_code":"CAD","in_stock":true},{"title":"12\" \/ Power Close (PC) \/ Standard (No Relay \/ No End Switch)","offer_id":43085331726379,"sku":"HAC-1250-OPC","price":378.0,"currency_code":"CAD","in_stock":true},{"title":"12\" \/ Power Close (PC) \/ End Switch (No Relay)","offer_id":43085331759147,"sku":"HAC-1250-SPC","price":408.0,"currency_code":"CAD","in_stock":true},{"title":"12\" \/ Power Close (PC) \/ Relay (No End Switch)","offer_id":43085331791915,"sku":"HAC-1251-OPC","price":431.0,"currency_code":"CAD","in_stock":true},{"title":"12\" \/ Power Close (PC) \/ Relay + End Switch","offer_id":43085331824683,"sku":"HAC-1251-SPC","price":458.0,"currency_code":"CAD","in_stock":true},{"title":"14\" \/ Power Open (PO) \/ Standard (No Relay \/ No End Switch)","offer_id":43085331857451,"sku":"HAC-1450-OPO","price":397.0,"currency_code":"CAD","in_stock":true},{"title":"14\" \/ Power Open (PO) \/ End Switch (No Relay)","offer_id":43085331890219,"sku":"HAC-1450-SPO","price":425.0,"currency_code":"CAD","in_stock":true},{"title":"14\" \/ Power Open (PO) \/ Relay (No End Switch)","offer_id":43085331922987,"sku":"HAC-1451-OPO","price":448.0,"currency_code":"CAD","in_stock":true},{"title":"14\" \/ Power Open (PO) \/ Relay + End Switch","offer_id":43085331955755,"sku":"HAC-1451-SPO","price":476.0,"currency_code":"CAD","in_stock":true},{"title":"14\" \/ Power Close (PC) \/ Standard (No Relay \/ No End Switch)","offer_id":43085331988523,"sku":"HAC-1450-OPC","price":397.0,"currency_code":"CAD","in_stock":true},{"title":"14\" \/ Power Close (PC) \/ End Switch (No Relay)","offer_id":43085332021291,"sku":"HAC-1450-SPC","price":425.0,"currency_code":"CAD","in_stock":true},{"title":"14\" \/ Power Close (PC) \/ Relay (No End Switch)","offer_id":43085332054059,"sku":"HAC-1451-OPC","price":448.0,"currency_code":"CAD","in_stock":true},{"title":"14\" \/ Power Close (PC) \/ Relay + End Switch","offer_id":43085332086827,"sku":"HAC-1451-SPC","price":476.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0647\/3459\/3067\/files\/image_84.png?v=1775770085"},{"product_id":"hac-belimo-tfb24-inline-damper-24vac","title":"HAC Inline Damper with Belimo TFB24 — On\/Off Spring Return, 24 Vac\/dc, 6\"–20\"","description":"\u003cp\u003e\u003cem\u003eProduct image is representative only. Actual product may differ in appearance depending on size, configuration, and options selected at order.\u003c\/em\u003e\u003c\/p\u003e\n\u003cstyle\u003e\n  .hac40-desc * { box-sizing: border-box; margin: 0; padding: 0; }\n  .hac40-desc { font-family: 'Open Sans', sans-serif; color: #001F3F; line-height: 1.6; font-size: 15px; }\n\n  .hac40-desc__intro { font-size: 15px; line-height: 1.75; color: #374151; margin-bottom: 20px; }\n\n  .hac40-desc__bullets { display: flex; flex-direction: column; gap: 6px; margin-bottom: 20px; }\n  .hac40-desc__bullet { display: flex; align-items: flex-start; gap: 10px; }\n  .hac40-desc__bullet-check { color: #C8102E; font-weight: 700; font-size: 14px; flex-shrink: 0; line-height: 1.6; }\n  .hac40-desc__bullet-text { font-size: 14px; color: #374151; font-family: 'Open Sans', sans-serif; line-height: 1.6; }\n  .hac40-desc__bullet-text strong { font-family: 'Montserrat', sans-serif; font-weight: 700; color: #001F3F; }\n\n  .hac40-desc__warning { background: #fff3f4; border-left: 4px solid #C8102E; border-radius: 0 4px 4px 0; padding: 12px 16px; margin-bottom: 20px; font-size: 13.5px; color: #001F3F; font-family: 'Open Sans', sans-serif; line-height: 1.6; }\n  .hac40-desc__warning strong { font-family: 'Montserrat', sans-serif; font-weight: 700; color: #C8102E; }\n\n  .hac40-desc__note { background: #F3F6F8; border-left: 4px solid #001F3F; border-radius: 0 4px 4px 0; padding: 12px 16px; margin-bottom: 20px; font-size: 13.5px; color: #001F3F; font-family: 'Open Sans', sans-serif; line-height: 1.6; }\n  .hac40-desc__note strong { font-family: 'Montserrat', sans-serif; font-weight: 700; }\n  .hac40-desc__note a { color: #C8102E; text-decoration: none; font-weight: 600; }\n\n  .hac40-desc__table-wrap { overflow-x: auto; margin-bottom: 20px; }\n  .hac40-desc__table { width: 100%; border-collapse: collapse; font-size: 12.5px; font-family: 'Open Sans', sans-serif; }\n  .hac40-desc__table th { background: #001F3F; color: #FFFFFF; font-family: 'Montserrat', sans-serif; font-weight: 700; font-size: 10.5px; text-transform: uppercase; letter-spacing: 0.05em; padding: 8px 12px; text-align: left; white-space: nowrap; }\n  .hac40-desc__table td { padding: 8px 12px; border-bottom: 1px solid #e2e8f0; color: #001F3F; vertical-align: top; }\n  .hac40-desc__table tr:last-child td { border-bottom: none; }\n  .hac40-desc__table tr.hac40-desc__table-highlight td { background: #F3F6F8; }\n  .hac40-desc__table tr.hac40-desc__table-highlight td:first-child { font-family: 'Montserrat', sans-serif; font-weight: 800; color: #C8102E; }\n  .hac40-desc__table td:first-child { font-family: 'Montserrat', sans-serif; font-weight: 700; color: #374151; }\n  .hac40-desc__table td:nth-child(2) { font-family: 'Montserrat', sans-serif; font-weight: 700; color: #C8102E; font-size: 12px; }\n\n  .hac40-desc__specs { display: grid; grid-template-columns: repeat(auto-fill, minmax(160px, 1fr)); gap: 8px; margin-bottom: 20px; }\n  .hac40-desc__spec { background: #F3F6F8; border: 1px solid #e2e8f0; border-radius: 5px; padding: 10px 12px; }\n  .hac40-desc__spec-label { font-family: 'Montserrat', sans-serif; font-size: 10px; font-weight: 700; text-transform: uppercase; letter-spacing: 0.07em; color: #718096; margin-bottom: 3px; }\n  .hac40-desc__spec-value { font-family: 'Montserrat', sans-serif; font-size: 12.5px; font-weight: 700; color: #001F3F; line-height: 1.35; }\n  .hac40-desc__spec--highlight { background: #001F3F; border-color: #001F3F; }\n  .hac40-desc__spec--highlight .hac40-desc__spec-label { color: rgba(255,255,255,0.5); }\n  .hac40-desc__spec--highlight .hac40-desc__spec-value { color: #FFFFFF; }\n  .hac40-desc__spec--amber { background: #fffbeb; border-color: #d97706; }\n  .hac40-desc__spec--amber .hac40-desc__spec-label { color: #92400e; }\n  .hac40-desc__spec--amber .hac40-desc__spec-value { color: #92400e; }\n  .hac40-desc__spec--red { background: #fff3f4; border-color: #C8102E; }\n  .hac40-desc__spec--red .hac40-desc__spec-label { color: #C8102E; }\n  .hac40-desc__spec--red .hac40-desc__spec-value { color: #C8102E; }\n\n  .hac40-desc__warranty { display: flex; align-items: center; gap: 10px; background: #001F3F; border-radius: 5px; padding: 12px 16px; }\n  .hac40-desc__warranty-text { font-family: 'Montserrat', sans-serif; font-size: 13px; font-weight: 700; color: #FFFFFF; }\n  .hac40-desc__warranty-sub { font-size: 12px; color: rgba(255,255,255,0.6); font-family: 'Open Sans', sans-serif; margin-top: 2px; }\n\u003c\/style\u003e\n\n\u003cdiv class=\"hac40-desc\"\u003e\n\n  \u003cp class=\"hac40-desc__intro\"\u003eHoyme's CSA-certified inline damper body with Belimo TFB24 on\/off spring return actuator — factory-assembled, single SKU, ready to install. The product for projects where the mechanical engineer specifies Belimo, where damper sizes extend beyond 14\", or where 24 Vac\/dc supply flexibility is required. Sizes 6\"–20\" in even-inch increments.\u003c\/p\u003e\n\n  \u003cdiv class=\"hac40-desc__bullets\"\u003e\n\n    \u003cdiv class=\"hac40-desc__bullet\"\u003e\n      \u003cspan class=\"hac40-desc__bullet-check\"\u003e✓\u003c\/span\u003e\n      \u003cspan class=\"hac40-desc__bullet-text\"\u003e\u003cstrong\u003eBelimo TFB24 — most specified on\/off spring return actuator in commercial HVAC\u003c\/strong\u003e — factory-mounted to Hoyme damper body; no field mounting, no compatibility questions, one SKU\u003c\/span\u003e\n    \u003c\/div\u003e\n\n    \u003cdiv class=\"hac40-desc__bullet\"\u003e\n      \u003cspan class=\"hac40-desc__bullet-check\"\u003e✓\u003c\/span\u003e\n      \u003cspan class=\"hac40-desc__bullet-text\"\u003e\u003cstrong\u003e24 Vac or 24 Vdc — either polarity on DC\u003c\/strong\u003e — practical advantage on BAS systems where the control output is DC rather than AC; most on\/off actuators at this price point are AC only\u003c\/span\u003e\n    \u003c\/div\u003e\n\n    \u003cdiv class=\"hac40-desc__bullet\"\u003e\n      \u003cspan class=\"hac40-desc__bullet-check\"\u003e✓\u003c\/span\u003e\n      \u003cspan class=\"hac40-desc__bullet-text\"\u003e\u003cstrong\u003e6\"–20\" even-inch sizes\u003c\/strong\u003e — covers the size range where the standard Hoyme quarter-turn drive is not rated; same spring return fail-safe behavior\u003c\/span\u003e\n    \u003c\/div\u003e\n\n    \u003cdiv class=\"hac40-desc__bullet\"\u003e\n      \u003cspan class=\"hac40-desc__bullet-check\"\u003e✓\u003c\/span\u003e\n      \u003cspan class=\"hac40-desc__bullet-text\"\u003e\u003cstrong\u003eTFB24 field-replaceable\u003c\/strong\u003e — stocked through Belimo distributors; actuator replaces without disturbing the damper body or duct connections\u003c\/span\u003e\n    \u003c\/div\u003e\n\n    \u003cdiv class=\"hac40-desc__bullet\"\u003e\n      \u003cspan class=\"hac40-desc__bullet-check\"\u003e✓\u003c\/span\u003e\n      \u003cspan class=\"hac40-desc__bullet-text\"\u003e\u003cstrong\u003eEnd switch and heat bypass (-H) available on all sizes\u003c\/strong\u003e — factory-installed; no relay on TFB24 motor code\u003c\/span\u003e\n    \u003c\/div\u003e\n\n    \u003cdiv class=\"hac40-desc__bullet\"\u003e\n      \u003cspan class=\"hac40-desc__bullet-check\"\u003e✓\u003c\/span\u003e\n      \u003cspan class=\"hac40-desc__bullet-text\"\u003e\u003cstrong\u003eCSA certified to 12\"\u003c\/strong\u003e — for 14\"–20\", confirm AHJ acceptance before ordering on code-required applications\u003c\/span\u003e\n    \u003c\/div\u003e\n\n  \u003c\/div\u003e\n\n  \u003cdiv class=\"hac40-desc__warning\"\u003e\n    \u003cstrong\u003eConfirm PO vs. PC before ordering — and confirm the -H bypass is not on a fresh air application.\u003c\/strong\u003e Action is factory-set and cannot be changed after installation. The -H heat bypass is permanent and cannot be disabled — do not specify -H on fresh air intake, make-up air, or ventilation applications. The bypass will allow continuous outdoor air infiltration when the damper is commanded closed.\u003c\/div\u003e\n\n  \u003cdiv class=\"hac40-desc__table-wrap\"\u003e\n    \u003ctable class=\"hac40-desc__table\"\u003e\n      \u003cthead\u003e\n        \u003ctr\u003e\n          \u003cth\u003eIf you need…\u003c\/th\u003e\n          \u003cth\u003eProduct\u003c\/th\u003e\n          \u003cth\u003eActuator\u003c\/th\u003e\n        \u003c\/tr\u003e\n      \u003c\/thead\u003e\n      \u003ctbody\u003e\n        \u003ctr class=\"hac40-desc__table-highlight\"\u003e\n          \u003ctd\u003eOn\/off spring return — 2-position gate, 24 Vac\/dc\u003c\/td\u003e\n          \u003ctd\u003eHAC-40\u003c\/td\u003e\n          \u003ctd\u003eBelimo TFB24 — this product\u003c\/td\u003e\n        \u003c\/tr\u003e\n        \u003ctr\u003e\n          \u003ctd\u003eOn\/off spring return — 100–240 Vac line voltage\u003c\/td\u003e\n          \u003ctd\u003eHAC-44\u003c\/td\u003e\n          \u003ctd\u003eBelimo TFB120\u003c\/td\u003e\n        \u003c\/tr\u003e\n        \u003ctr\u003e\n          \u003ctd\u003eModulating 2–10 VDC proportional control\u003c\/td\u003e\n          \u003ctd\u003eHAC-43\u003c\/td\u003e\n          \u003ctd\u003eBelimo TFB24-SR-T\u003c\/td\u003e\n        \u003c\/tr\u003e\n        \u003ctr\u003e\n          \u003ctd\u003e3-wire floating point DDC open\/stop\/close\u003c\/td\u003e\n          \u003ctd\u003eHAC-34\u003c\/td\u003e\n          \u003ctd\u003eBelimo CMB24-3-T\u003c\/td\u003e\n        \u003c\/tr\u003e\n        \u003ctr\u003e\n          \u003ctd\u003eUL 555S fire and smoke rated\u003c\/td\u003e\n          \u003ctd\u003eHAC-90\u003c\/td\u003e\n          \u003ctd\u003eBelimo FSLF24 US\u003c\/td\u003e\n        \u003c\/tr\u003e\n      \u003c\/tbody\u003e\n    \u003c\/table\u003e\n  \u003c\/div\u003e\n\n  \u003cdiv class=\"hac40-desc__specs\"\u003e\n    \u003cdiv class=\"hac40-desc__spec hac40-desc__spec--highlight\"\u003e\n      \u003cdiv class=\"hac40-desc__spec-label\"\u003eActuator\u003c\/div\u003e\n      \u003cdiv class=\"hac40-desc__spec-value\"\u003eBelimo TFB24 — factory-mounted\u003c\/div\u003e\n    \u003c\/div\u003e\n    \u003cdiv class=\"hac40-desc__spec\"\u003e\n      \u003cdiv class=\"hac40-desc__spec-label\"\u003eSizes\u003c\/div\u003e\n      \u003cdiv class=\"hac40-desc__spec-value\"\u003e6\"–20\" even inches\u003c\/div\u003e\n    \u003c\/div\u003e\n    \u003cdiv class=\"hac40-desc__spec\"\u003e\n      \u003cdiv class=\"hac40-desc__spec-label\"\u003eSupply Voltage\u003c\/div\u003e\n      \u003cdiv class=\"hac40-desc__spec-value\"\u003e24 Vac or 24 Vdc\u003c\/div\u003e\n    \u003c\/div\u003e\n    \u003cdiv class=\"hac40-desc__spec\"\u003e\n      \u003cdiv class=\"hac40-desc__spec-label\"\u003eAction\u003c\/div\u003e\n      \u003cdiv class=\"hac40-desc__spec-value\"\u003ePO or PC\u003c\/div\u003e\n    \u003c\/div\u003e\n    \u003cdiv class=\"hac40-desc__spec hac40-desc__spec--amber\"\u003e\n      \u003cdiv class=\"hac40-desc__spec-label\"\u003eCSA Status\u003c\/div\u003e\n      \u003cdiv class=\"hac40-desc__spec-value\"\u003eCertified to 12\" — confirm AHJ for 14\"–20\"\u003c\/div\u003e\n    \u003c\/div\u003e\n    \u003cdiv class=\"hac40-desc__spec hac40-desc__spec--red\"\u003e\n      \u003cdiv class=\"hac40-desc__spec-label\"\u003eRelay\u003c\/div\u003e\n      \u003cdiv class=\"hac40-desc__spec-value\"\u003eNot available on TFB24\u003c\/div\u003e\n    \u003c\/div\u003e\n  \u003c\/div\u003e\n\n  \u003c!-- CORRECTION: ADP-0241-S5A appears in the SharePoint source document but is not\n       listed in the 2026 price list. Specific model reference removed, consistent with\n       corrections applied across all affected product descriptions.\n       Do not reinstate until factory confirms the correct model number. --\u003e\n  \u003cdiv class=\"hac40-desc__note\"\u003e\n    \u003cstrong\u003eNeed ADP furnace fan sequencing?\u003c\/strong\u003e Use the end switch variant (SPO or SPC) with an \u003ca href=\"\/products\/adp-damper-interlock-relay-adaptor\"\u003eADP relay adaptor\u003c\/a\u003e for fresh air + furnace fan interlock. The TFB24 does not include a relay — if a relay output is needed in the control circuit, use a separate relay adaptor. For modulating control see \u003ca href=\"\/products\/hac-belimo-tfb24-sr-t-modulating-2-10vdc\"\u003eHAC-43 (TFB24-SR-T)\u003c\/a\u003e.\u003c\/div\u003e\n\n  \u003cdiv class=\"hac40-desc__warranty\"\u003e\n    \u003csvg style=\"flex-shrink: 0;\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" fill=\"none\" viewbox=\"0 0 24 24\" height=\"20\" width=\"20\"\u003e\n      \u003cpath stroke-linejoin=\"round\" stroke-linecap=\"round\" stroke-width=\"1.8\" stroke=\"#C8102E\" d=\"M12 22s8-4 8-10V5l-8-3-8 3v7c0 6 8 10 8 10z\"\u003e\u003c\/path\u003e\n      \u003cpath stroke-linejoin=\"round\" stroke-linecap=\"round\" stroke-width=\"1.8\" stroke=\"#C8102E\" d=\"M9 12l2 2 4-4\"\u003e\u003c\/path\u003e\n    \u003c\/svg\u003e\n    \u003cdiv\u003e\n      \u003cdiv class=\"hac40-desc__warranty-text\"\u003e2-year electrical  ·  10-year mechanical warranty\u003c\/div\u003e\n      \u003cdiv class=\"hac40-desc__warranty-sub\"\u003eHoyme damper body — Made in Canada  ·  Belimo TFB24 field-replaceable through Belimo distributors\u003c\/div\u003e\n    \u003c\/div\u003e\n  \u003c\/div\u003e\n\n\u003c\/div\u003e","brand":"Hoyme Manufacturing","offers":[{"title":"6\" \/ Power Open (PO) \/ Standard","offer_id":43085973028907,"sku":"HAC-0640-OPO","price":605.0,"currency_code":"CAD","in_stock":true},{"title":"6\" \/ Power Open (PO) \/ Heat","offer_id":43093472706603,"sku":"HAC-0640-OPO-H","price":627.0,"currency_code":"CAD","in_stock":true},{"title":"6\" \/ Power Close (PC) \/ Standard","offer_id":43085973094443,"sku":"HAC-0640-OPC","price":605.0,"currency_code":"CAD","in_stock":true},{"title":"6\" \/ Power Close (PC) \/ Heat","offer_id":43093472739371,"sku":"HAC-0640-OPC-H","price":627.0,"currency_code":"CAD","in_stock":true},{"title":"6\" \/ Power Open + End Switch \/ Standard","offer_id":43093472772139,"sku":"HAC-0640-SPO","price":625.0,"currency_code":"CAD","in_stock":true},{"title":"6\" \/ Power Open + End Switch \/ Heat","offer_id":43093472804907,"sku":"HAC-0640-SPO-H","price":646.0,"currency_code":"CAD","in_stock":true},{"title":"6\" \/ Power Close + End Switch \/ Standard","offer_id":43093472837675,"sku":"HAC-0640-SPC","price":625.0,"currency_code":"CAD","in_stock":true},{"title":"6\" \/ Power Close + End Switch \/ Heat","offer_id":43093472870443,"sku":"HAC-0640-SPC-H","price":646.0,"currency_code":"CAD","in_stock":true},{"title":"8\" \/ Power Open (PO) \/ Standard","offer_id":43085973159979,"sku":"HAC-0840-OPO","price":607.0,"currency_code":"CAD","in_stock":true},{"title":"8\" \/ Power Open (PO) \/ Heat","offer_id":43093472903211,"sku":"HAC-0840-OPO-H","price":630.0,"currency_code":"CAD","in_stock":true},{"title":"8\" \/ Power Close (PC) \/ Standard","offer_id":43085973225515,"sku":"HAC-0840-OPC","price":607.0,"currency_code":"CAD","in_stock":true},{"title":"8\" \/ Power Close (PC) \/ Heat","offer_id":43093472935979,"sku":"HAC-0840-OPC-H","price":630.0,"currency_code":"CAD","in_stock":true},{"title":"8\" \/ Power Open + End Switch \/ Standard","offer_id":43093472968747,"sku":"HAC-0840-SPO","price":626.0,"currency_code":"CAD","in_stock":true},{"title":"8\" \/ Power Open + End Switch \/ Heat","offer_id":43093473001515,"sku":"HAC-0840-SPO-H","price":650.0,"currency_code":"CAD","in_stock":true},{"title":"8\" \/ Power Close + End Switch \/ Standard","offer_id":43093473034283,"sku":"HAC-0840-SPC","price":626.0,"currency_code":"CAD","in_stock":true},{"title":"8\" \/ Power Close + End Switch \/ Heat","offer_id":43093473067051,"sku":"HAC-0840-SPC-H","price":650.0,"currency_code":"CAD","in_stock":true},{"title":"10\" \/ Power Open (PO) \/ Standard","offer_id":43085973291051,"sku":"HAC-1040-OPO","price":640.0,"currency_code":"CAD","in_stock":true},{"title":"10\" \/ Power Open (PO) \/ Heat","offer_id":43093473099819,"sku":"HAC-1040-OPO-H","price":662.0,"currency_code":"CAD","in_stock":true},{"title":"10\" \/ Power Close (PC) \/ Standard","offer_id":43085973356587,"sku":"HAC-1040-OPC","price":640.0,"currency_code":"CAD","in_stock":true},{"title":"10\" \/ Power Close (PC) \/ Heat","offer_id":43093473132587,"sku":"HAC-1040-OPC-H","price":662.0,"currency_code":"CAD","in_stock":true},{"title":"10\" \/ Power Open + End Switch \/ Standard","offer_id":43093473165355,"sku":"HAC-1040-SPO","price":660.0,"currency_code":"CAD","in_stock":true},{"title":"10\" \/ Power Open + End Switch \/ Heat","offer_id":43093473198123,"sku":"HAC-1040-SPO-H","price":682.0,"currency_code":"CAD","in_stock":true},{"title":"10\" \/ Power Close + End Switch \/ Standard","offer_id":43093473230891,"sku":"HAC-1040-SPC","price":660.0,"currency_code":"CAD","in_stock":true},{"title":"10\" \/ Power Close + End Switch \/ Heat","offer_id":43093473263659,"sku":"HAC-1040-SPC-H","price":682.0,"currency_code":"CAD","in_stock":true},{"title":"12\" \/ Power Open (PO) \/ Standard","offer_id":43085973422123,"sku":"HAC-1240-OPO","price":645.0,"currency_code":"CAD","in_stock":true},{"title":"12\" \/ Power Open (PO) \/ Heat","offer_id":43093473296427,"sku":"HAC-1240-OPO-H","price":667.0,"currency_code":"CAD","in_stock":true},{"title":"12\" \/ Power Close (PC) \/ Standard","offer_id":43085973487659,"sku":"HAC-1240-OPC","price":645.0,"currency_code":"CAD","in_stock":true},{"title":"12\" \/ Power Close (PC) \/ Heat","offer_id":43093473329195,"sku":"HAC-1240-OPC-H","price":667.0,"currency_code":"CAD","in_stock":true},{"title":"12\" \/ Power Open + End Switch \/ Standard","offer_id":43093473361963,"sku":"HAC-1240-SPO","price":664.0,"currency_code":"CAD","in_stock":true},{"title":"12\" \/ Power Open + End Switch \/ Heat","offer_id":43093473394731,"sku":"HAC-1240-SPO-H","price":686.0,"currency_code":"CAD","in_stock":true},{"title":"12\" \/ Power Close + End Switch \/ Standard","offer_id":43093473427499,"sku":"HAC-1240-SPC","price":664.0,"currency_code":"CAD","in_stock":true},{"title":"12\" \/ Power Close + End Switch \/ Heat","offer_id":43093473460267,"sku":"HAC-1240-SPC-H","price":686.0,"currency_code":"CAD","in_stock":true},{"title":"14\" \/ Power Open (PO) \/ Standard","offer_id":43085973553195,"sku":"HAC-1440-OPO","price":695.0,"currency_code":"CAD","in_stock":true},{"title":"14\" \/ Power Open (PO) \/ Heat","offer_id":43093473493035,"sku":"HAC-1440-OPO-H","price":718.0,"currency_code":"CAD","in_stock":true},{"title":"14\" \/ Power Close (PC) \/ Standard","offer_id":43085973618731,"sku":"HAC-1440-OPC","price":695.0,"currency_code":"CAD","in_stock":true},{"title":"14\" \/ Power Close (PC) \/ Heat","offer_id":43093473525803,"sku":"HAC-1440-OPC-H","price":718.0,"currency_code":"CAD","in_stock":true},{"title":"14\" \/ Power Open + End Switch \/ Standard","offer_id":43093473558571,"sku":"HAC-1440-SPO","price":714.0,"currency_code":"CAD","in_stock":true},{"title":"14\" \/ Power Open + End Switch \/ Heat","offer_id":43093473591339,"sku":"HAC-1440-SPO-H","price":736.0,"currency_code":"CAD","in_stock":true},{"title":"14\" \/ Power Close + End Switch \/ Standard","offer_id":43093473624107,"sku":"HAC-1440-SPC","price":714.0,"currency_code":"CAD","in_stock":true},{"title":"14\" \/ Power Close + End Switch \/ Heat","offer_id":43093473656875,"sku":"HAC-1440-SPC-H","price":736.0,"currency_code":"CAD","in_stock":true},{"title":"16\" \/ Power Open (PO) \/ Standard","offer_id":43085973684267,"sku":"HAC-1640-OPO","price":696.0,"currency_code":"CAD","in_stock":true},{"title":"16\" \/ Power Open (PO) \/ Heat","offer_id":43093473689643,"sku":"HAC-1640-OPO-H","price":719.0,"currency_code":"CAD","in_stock":true},{"title":"16\" \/ Power Close (PC) \/ Standard","offer_id":43085973749803,"sku":"HAC-1640-OPC","price":696.0,"currency_code":"CAD","in_stock":true},{"title":"16\" \/ Power Close (PC) \/ Heat","offer_id":43093473722411,"sku":"HAC-1640-OPC-H","price":719.0,"currency_code":"CAD","in_stock":true},{"title":"16\" \/ Power Open + End Switch \/ Standard","offer_id":43093473755179,"sku":"HAC-1640-SPO","price":717.0,"currency_code":"CAD","in_stock":true},{"title":"16\" \/ Power Open + End Switch \/ Heat","offer_id":43093473787947,"sku":"HAC-1640-SPO-H","price":737.0,"currency_code":"CAD","in_stock":true},{"title":"16\" \/ Power Close + End Switch \/ Standard","offer_id":43093473820715,"sku":"HAC-1640-SPC","price":717.0,"currency_code":"CAD","in_stock":true},{"title":"16\" \/ Power Close + End Switch \/ Heat","offer_id":43093473853483,"sku":"HAC-1640-SPC-H","price":737.0,"currency_code":"CAD","in_stock":true},{"title":"18\" \/ Power Open (PO) \/ Standard","offer_id":43085973815339,"sku":"HAC-1840-OPO","price":737.0,"currency_code":"CAD","in_stock":true},{"title":"18\" \/ Power Open (PO) \/ Heat","offer_id":43093473886251,"sku":"HAC-1840-OPO-H","price":760.0,"currency_code":"CAD","in_stock":true},{"title":"18\" \/ Power Close (PC) \/ Standard","offer_id":43085973880875,"sku":"HAC-1840-OPC","price":737.0,"currency_code":"CAD","in_stock":true},{"title":"18\" \/ Power Close (PC) \/ Heat","offer_id":43093473919019,"sku":"HAC-1840-OPC-H","price":760.0,"currency_code":"CAD","in_stock":true},{"title":"18\" \/ Power Open + End Switch \/ Standard","offer_id":43093473951787,"sku":"HAC-1840-SPO","price":757.0,"currency_code":"CAD","in_stock":true},{"title":"18\" \/ Power Open + End Switch \/ Heat","offer_id":43093473984555,"sku":"HAC-1840-SPO-H","price":778.0,"currency_code":"CAD","in_stock":true},{"title":"18\" \/ Power Close + End Switch \/ Standard","offer_id":43093474017323,"sku":"HAC-1840-SPC","price":757.0,"currency_code":"CAD","in_stock":true},{"title":"18\" \/ Power Close + End Switch \/ Heat","offer_id":43093474050091,"sku":"HAC-1840-SPC-H","price":778.0,"currency_code":"CAD","in_stock":true},{"title":"20\" \/ Power Open (PO) \/ Standard","offer_id":43085973946411,"sku":"HAC-2040-OPO","price":771.0,"currency_code":"CAD","in_stock":true},{"title":"20\" \/ Power Open (PO) \/ Heat","offer_id":43093474082859,"sku":"HAC-2040-OPO-H","price":793.0,"currency_code":"CAD","in_stock":true},{"title":"20\" \/ Power Close (PC) \/ Standard","offer_id":43085974011947,"sku":"HAC-2040-OPC","price":771.0,"currency_code":"CAD","in_stock":true},{"title":"20\" \/ Power Close (PC) \/ Heat","offer_id":43093474115627,"sku":"HAC-2040-OPC-H","price":793.0,"currency_code":"CAD","in_stock":true},{"title":"20\" \/ Power Open + End Switch \/ Standard","offer_id":43093474148395,"sku":"HAC-2040-SPO","price":791.0,"currency_code":"CAD","in_stock":true},{"title":"20\" \/ Power Open + End Switch \/ Heat","offer_id":43093474181163,"sku":"HAC-2040-SPO-H","price":814.0,"currency_code":"CAD","in_stock":true},{"title":"20\" \/ Power Close + End Switch \/ Standard","offer_id":43093474213931,"sku":"HAC-2040-SPC","price":791.0,"currency_code":"CAD","in_stock":true},{"title":"20\" \/ Power Close + End Switch \/ Heat","offer_id":43093474246699,"sku":"HAC-2040-SPC-H","price":814.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0647\/3459\/3067\/files\/image_81.png?v=1775769862"},{"product_id":"hac-12l-insulated-inline-damper-120vac-4-9-cold-climate","title":"HAC-12L Insulated Inline Fresh Air Damper — 120 Vac, Built-In Transformer, Factory-Insulated Body, 4\"–9\"","description":"\u003cp\u003e\u003cem\u003eProduct image is representative only. Actual product may differ in appearance depending on size, configuration, and options selected at order.\u003c\/em\u003e\u003c\/p\u003e\n\u003cstyle\u003e\n  .hac12l-desc * { box-sizing: border-box; margin: 0; padding: 0; }\n  .hac12l-desc { font-family: 'Open Sans', sans-serif; color: #001F3F; line-height: 1.6; font-size: 15px; }\n\n  .hac12l-desc__intro { font-size: 15px; line-height: 1.75; color: #374151; margin-bottom: 20px; }\n\n  .hac12l-desc__bullets { display: flex; flex-direction: column; gap: 6px; margin-bottom: 20px; }\n  .hac12l-desc__bullet { display: flex; align-items: flex-start; gap: 10px; }\n  .hac12l-desc__bullet-check { color: #C8102E; font-weight: 700; font-size: 14px; flex-shrink: 0; line-height: 1.6; }\n  .hac12l-desc__bullet-text { font-size: 14px; color: #374151; font-family: 'Open Sans', sans-serif; line-height: 1.6; }\n  .hac12l-desc__bullet-text strong { font-family: 'Montserrat', sans-serif; font-weight: 700; color: #001F3F; }\n\n  .hac12l-desc__dual-warning { background: #fff3f4; border: 2px solid #C8102E; border-radius: 5px; padding: 14px 18px; margin-bottom: 20px; display: flex; flex-direction: column; gap: 8px; }\n  .hac12l-desc__dual-warning-item { display: flex; align-items: flex-start; gap: 10px; font-size: 13.5px; color: #001F3F; font-family: 'Open Sans', sans-serif; line-height: 1.55; }\n  .hac12l-desc__dual-warning-icon { color: #C8102E; font-weight: 800; font-size: 14px; flex-shrink: 0; line-height: 1.55; }\n  .hac12l-desc__dual-warning strong { font-family: 'Montserrat', sans-serif; font-weight: 700; color: #C8102E; }\n\n  .hac12l-desc__note { background: #F3F6F8; border-left: 4px solid #001F3F; border-radius: 0 4px 4px 0; padding: 12px 16px; margin-bottom: 20px; font-size: 13.5px; color: #001F3F; font-family: 'Open Sans', sans-serif; line-height: 1.6; }\n  .hac12l-desc__note strong { font-family: 'Montserrat', sans-serif; font-weight: 700; }\n  .hac12l-desc__note a { color: #C8102E; text-decoration: none; font-weight: 600; }\n\n  .hac12l-desc__table-wrap { overflow-x: auto; margin-bottom: 20px; }\n  .hac12l-desc__table { width: 100%; border-collapse: collapse; font-size: 12.5px; font-family: 'Open Sans', sans-serif; }\n  .hac12l-desc__table th { background: #001F3F; color: #FFFFFF; font-family: 'Montserrat', sans-serif; font-weight: 700; font-size: 10.5px; text-transform: uppercase; letter-spacing: 0.05em; padding: 9px 14px; text-align: left; white-space: nowrap; }\n  .hac12l-desc__table td { padding: 8px 14px; border-bottom: 1px solid #e2e8f0; color: #001F3F; vertical-align: top; }\n  .hac12l-desc__table tr:last-child td { border-bottom: none; }\n  .hac12l-desc__table tr.hac12l-desc__table-highlight td { background: #F3F6F8; }\n  .hac12l-desc__table tr.hac12l-desc__table-highlight td:last-child { font-family: 'Montserrat', sans-serif; font-weight: 800; color: #C8102E; }\n  .hac12l-desc__table td:last-child { font-family: 'Montserrat', sans-serif; font-weight: 700; color: #374151; font-size: 12px; white-space: nowrap; }\n\n  .hac12l-desc__specs { display: grid; grid-template-columns: repeat(auto-fill, minmax(160px, 1fr)); gap: 8px; margin-bottom: 20px; }\n  .hac12l-desc__spec { background: #F3F6F8; border: 1px solid #e2e8f0; border-radius: 5px; padding: 10px 12px; }\n  .hac12l-desc__spec-label { font-family: 'Montserrat', sans-serif; font-size: 10px; font-weight: 700; text-transform: uppercase; letter-spacing: 0.07em; color: #718096; margin-bottom: 3px; }\n  .hac12l-desc__spec-value { font-family: 'Montserrat', sans-serif; font-size: 12.5px; font-weight: 700; color: #001F3F; line-height: 1.35; }\n  .hac12l-desc__spec--highlight { background: #001F3F; border-color: #001F3F; }\n  .hac12l-desc__spec--highlight .hac12l-desc__spec-label { color: rgba(255,255,255,0.5); }\n  .hac12l-desc__spec--highlight .hac12l-desc__spec-value { color: #FFFFFF; }\n  .hac12l-desc__spec--highlight2 { background: #001F3F; border-color: #001F3F; }\n  .hac12l-desc__spec--highlight2 .hac12l-desc__spec-label { color: rgba(255,255,255,0.5); }\n  .hac12l-desc__spec--highlight2 .hac12l-desc__spec-value { color: #FFFFFF; }\n  .hac12l-desc__spec--amber { background: #fffbeb; border-color: #d97706; }\n  .hac12l-desc__spec--amber .hac12l-desc__spec-label { color: #92400e; }\n  .hac12l-desc__spec--amber .hac12l-desc__spec-value { color: #92400e; }\n\n  .hac12l-desc__warranty { display: flex; align-items: center; gap: 10px; background: #001F3F; border-radius: 5px; padding: 12px 16px; }\n  .hac12l-desc__warranty-text { font-family: 'Montserrat', sans-serif; font-size: 13px; font-weight: 700; color: #FFFFFF; }\n  .hac12l-desc__warranty-sub { font-size: 12px; color: rgba(255,255,255,0.6); font-family: 'Open Sans', sans-serif; margin-top: 2px; }\n\u003c\/style\u003e\n\n\u003cdiv class=\"hac12l-desc\"\u003e\n\n  \u003cp class=\"hac12l-desc__intro\"\u003eThe HAC-12L combines two features in one unit: the 120 Vac built-in transformer of the HAC-12 and the factory-insulated body of the HAC-L. For one specific situation — a fresh air damper location that is both on a 120 Vac site and in unconditioned or semi-conditioned space where condensation on the damper body is a concern. Both conditions must be present. If only one applies, one of the single-feature variants is the correct order. CSA certified. Sizes 4\"–9\".\u003c\/p\u003e\n\n  \u003cdiv class=\"hac12l-desc__dual-warning\"\u003e\n    \u003cdiv class=\"hac12l-desc__dual-warning-item\"\u003e\n      \u003cspan class=\"hac12l-desc__dual-warning-icon\"\u003e!\u003c\/span\u003e\n      \u003cspan\u003e\u003cstrong\u003eDo not supply 24 Vac to a HAC-12L.\u003c\/strong\u003e The built-in transformer requires 120 Vac input. Supplying 24 Vac will result in product damage and will not operate the damper.\u003c\/span\u003e\n    \u003c\/div\u003e\n    \u003cdiv class=\"hac12l-desc__dual-warning-item\"\u003e\n      \u003cspan class=\"hac12l-desc__dual-warning-icon\"\u003e!\u003c\/span\u003e\n      \u003cspan\u003e\u003cstrong\u003eThe HAC-12L insulates the damper body only.\u003c\/strong\u003e The duct run from the exterior penetration to the HAC-12L still requires insulation per code — insulate the duct separately.\u003c\/span\u003e\n    \u003c\/div\u003e\n  \u003c\/div\u003e\n\n  \u003cdiv class=\"hac12l-desc__bullets\"\u003e\n\n    \u003cdiv class=\"hac12l-desc__bullet\"\u003e\n      \u003cspan class=\"hac12l-desc__bullet-check\"\u003e✓\u003c\/span\u003e\n      \u003cspan class=\"hac12l-desc__bullet-text\"\u003e\u003cstrong\u003eBuilt-in 120 Vac to 24 Vac transformer\u003c\/strong\u003e — one switched 120 Vac circuit to the damper; no separate transformer, no low-voltage wiring run required\u003c\/span\u003e\n    \u003c\/div\u003e\n\n    \u003cdiv class=\"hac12l-desc__bullet\"\u003e\n      \u003cspan class=\"hac12l-desc__bullet-check\"\u003e✓\u003c\/span\u003e\n      \u003cspan class=\"hac12l-desc__bullet-text\"\u003e\u003cstrong\u003eFactory insulation — applied before assembly\u003c\/strong\u003e — covers the actuator housing, motor lead exits, and collar joint where field-wrapping fails first; not field-applied foam tape\u003c\/span\u003e\n    \u003c\/div\u003e\n\n    \u003cdiv class=\"hac12l-desc__bullet\"\u003e\n      \u003cspan class=\"hac12l-desc__bullet-check\"\u003e✓\u003c\/span\u003e\n      \u003cspan class=\"hac12l-desc__bullet-text\"\u003e\u003cstrong\u003eSame spring return operation as the standard HAC\u003c\/strong\u003e — Hansen motor with 24 Vac spring return internally; same PO\/PC fail-safe behavior\u003c\/span\u003e\n    \u003c\/div\u003e\n\n    \u003cdiv class=\"hac12l-desc__bullet\"\u003e\n      \u003cspan class=\"hac12l-desc__bullet-check\"\u003e✓\u003c\/span\u003e\n      \u003cspan class=\"hac12l-desc__bullet-text\"\u003e\u003cstrong\u003eCSA certified\u003c\/strong\u003e — complete assembly, Canadian and US installations\u003c\/span\u003e\n    \u003c\/div\u003e\n\n    \u003cdiv class=\"hac12l-desc__bullet\"\u003e\n      \u003cspan class=\"hac12l-desc__bullet-check\"\u003e✓\u003c\/span\u003e\n      \u003cspan class=\"hac12l-desc__bullet-text\"\u003e\u003cstrong\u003ePO or PC action, end switch available\u003c\/strong\u003e — all factory-installed; relay not available on motor code 12; confirm action before ordering — cannot be changed after installation\u003c\/span\u003e\n    \u003c\/div\u003e\n\n  \u003c\/div\u003e\n\n  \u003cdiv class=\"hac12l-desc__table-wrap\"\u003e\n    \u003ctable class=\"hac12l-desc__table\"\u003e\n      \u003cthead\u003e\n        \u003ctr\u003e\n          \u003cth\u003eJob Condition\u003c\/th\u003e\n          \u003cth\u003eRight Product\u003c\/th\u003e\n        \u003c\/tr\u003e\n      \u003c\/thead\u003e\n      \u003ctbody\u003e\n        \u003ctr class=\"hac12l-desc__table-highlight\"\u003e\n          \u003ctd\u003e120 Vac + cold climate \/ unconditioned damper location (insulation needed)\u003c\/td\u003e\n          \u003ctd\u003eHAC-12L — this product\u003c\/td\u003e\n        \u003c\/tr\u003e\n        \u003ctr\u003e\n          \u003ctd\u003e120 Vac + fresh air \/ make-up air, conditioned damper location\u003c\/td\u003e\n          \u003ctd\u003eHAC-12\u003c\/td\u003e\n        \u003c\/tr\u003e\n        \u003ctr\u003e\n          \u003ctd\u003e120 Vac + hot air duct zone control (bypass needed), conditioned location\u003c\/td\u003e\n          \u003ctd\u003eHAC-12H\u003c\/td\u003e\n        \u003c\/tr\u003e\n        \u003ctr\u003e\n          \u003ctd\u003e24 Vac + cold climate \/ unconditioned damper location\u003c\/td\u003e\n          \u003ctd\u003eHAC-L\u003c\/td\u003e\n        \u003c\/tr\u003e\n        \u003ctr\u003e\n          \u003ctd\u003e24 Vac + hot air zone control (bypass needed)\u003c\/td\u003e\n          \u003ctd\u003eHAC-H\u003c\/td\u003e\n        \u003c\/tr\u003e\n        \u003ctr\u003e\n          \u003ctd\u003e120 Vac + cold climate AND hot air zone control (bypass + insulation)\u003c\/td\u003e\n          \u003ctd\u003eContact Hoyme\u003c\/td\u003e\n        \u003c\/tr\u003e\n      \u003c\/tbody\u003e\n    \u003c\/table\u003e\n  \u003c\/div\u003e\n\n  \u003cdiv class=\"hac12l-desc__specs\"\u003e\n    \u003cdiv class=\"hac12l-desc__spec hac12l-desc__spec--highlight\"\u003e\n      \u003cdiv class=\"hac12l-desc__spec-label\"\u003eSupply Voltage\u003c\/div\u003e\n      \u003cdiv class=\"hac12l-desc__spec-value\"\u003e120 Vac — built-in transformer\u003c\/div\u003e\n    \u003c\/div\u003e\n    \u003cdiv class=\"hac12l-desc__spec hac12l-desc__spec--highlight2\"\u003e\n      \u003cdiv class=\"hac12l-desc__spec-label\"\u003eInsulation\u003c\/div\u003e\n      \u003cdiv class=\"hac12l-desc__spec-value\"\u003eFactory — not field-wrapped\u003c\/div\u003e\n    \u003c\/div\u003e\n    \u003cdiv class=\"hac12l-desc__spec\"\u003e\n      \u003cdiv class=\"hac12l-desc__spec-label\"\u003eSizes\u003c\/div\u003e\n      \u003cdiv class=\"hac12l-desc__spec-value\"\u003e4\"–9\"\u003c\/div\u003e\n    \u003c\/div\u003e\n    \u003cdiv class=\"hac12l-desc__spec\"\u003e\n      \u003cdiv class=\"hac12l-desc__spec-label\"\u003eAction\u003c\/div\u003e\n      \u003cdiv class=\"hac12l-desc__spec-value\"\u003ePO or PC\u003c\/div\u003e\n    \u003c\/div\u003e\n    \u003cdiv class=\"hac12l-desc__spec\"\u003e\n      \u003cdiv class=\"hac12l-desc__spec-label\"\u003eCertification\u003c\/div\u003e\n      \u003cdiv class=\"hac12l-desc__spec-value\"\u003eCSA — complete assembly\u003c\/div\u003e\n    \u003c\/div\u003e\n    \u003cdiv class=\"hac12l-desc__spec hac12l-desc__spec--amber\"\u003e\n      \u003cdiv class=\"hac12l-desc__spec-label\"\u003eRelay\u003c\/div\u003e\n      \u003cdiv class=\"hac12l-desc__spec-value\"\u003eNot available on motor code 12\u003c\/div\u003e\n    \u003c\/div\u003e\n  \u003c\/div\u003e\n\n  \u003c!-- CORRECTION: ADP-0241-S5A appears in the SharePoint source document but is not\n       listed in the 2026 price list. Specific model reference removed, consistent with\n       corrections applied to HAC, HAC-L, HAC-E, HAC-12, HAC-40, HAC-50\/51.\n       General ADP series link substituted. Do not reinstate until factory confirms\n       the correct model number. --\u003e\n  \u003cdiv class=\"hac12l-desc__note\"\u003e\n    \u003cstrong\u003eNeed relay output or ADP furnace fan sequencing?\u003c\/strong\u003e Motor code 12 does not include relay capability on any 120 Vac variant. For cold climate fresh air with relay and ADP interlock, use the \u003ca href=\"\/products\/hac-l-insulated-inline-damper-24vac\"\u003eHAC-L (24 Vac)\u003c\/a\u003e with the relay option and the appropriate \u003ca href=\"\/products\/adp-damper-interlock-relay-adaptor\"\u003eADP relay adaptor\u003c\/a\u003e. If the site is 120 Vac only, discuss a line-voltage relay approach with your controls supplier.\u003c\/div\u003e\n\n  \u003cdiv class=\"hac12l-desc__warranty\"\u003e\n    \u003csvg style=\"flex-shrink: 0;\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" fill=\"none\" viewbox=\"0 0 24 24\" height=\"20\" width=\"20\"\u003e\n      \u003cpath stroke-linejoin=\"round\" stroke-linecap=\"round\" stroke-width=\"1.8\" stroke=\"#C8102E\" d=\"M12 22s8-4 8-10V5l-8-3-8 3v7c0 6 8 10 8 10z\"\u003e\u003c\/path\u003e\n      \u003cpath stroke-linejoin=\"round\" stroke-linecap=\"round\" stroke-width=\"1.8\" stroke=\"#C8102E\" d=\"M9 12l2 2 4-4\"\u003e\u003c\/path\u003e\n    \u003c\/svg\u003e\n    \u003cdiv\u003e\n      \u003cdiv class=\"hac12l-desc__warranty-text\"\u003e2-year electrical  ·  10-year mechanical warranty\u003c\/div\u003e\n      \u003cdiv class=\"hac12l-desc__warranty-sub\"\u003eCSA certified  ·  Made in Canada  ·  Built for Canadian winters\u003c\/div\u003e\n    \u003c\/div\u003e\n  \u003c\/div\u003e\n\n\u003c\/div\u003e","brand":"Hoyme Manufacturing","offers":[{"title":"4\" \/ Power Open (PO) \/ No End Switch","offer_id":43092543406123,"sku":"HAC-0412-OPO-L","price":249.0,"currency_code":"CAD","in_stock":true},{"title":"4\" \/ Power Open (PO) \/ End Switch","offer_id":43092547436587,"sku":"HAC-0412-SPO-L","price":277.0,"currency_code":"CAD","in_stock":true},{"title":"4\" \/ Power Close (PC) \/ No End Switch","offer_id":43092547469355,"sku":"HAC-0412-OPC-L","price":249.0,"currency_code":"CAD","in_stock":true},{"title":"4\" \/ Power Close (PC) \/ End Switch","offer_id":43092547502123,"sku":"HAC-0412-SPC-L","price":277.0,"currency_code":"CAD","in_stock":true},{"title":"5\" \/ Power Open (PO) \/ No End Switch","offer_id":43092543438891,"sku":"HAC-0512-OPO-L","price":251.0,"currency_code":"CAD","in_stock":true},{"title":"5\" \/ Power Open (PO) \/ End Switch","offer_id":43092547534891,"sku":"HAC-0512-SPO-L","price":278.0,"currency_code":"CAD","in_stock":true},{"title":"5\" \/ Power Close (PC) \/ No End Switch","offer_id":43092547567659,"sku":"HAC-0512-OPC-L","price":251.0,"currency_code":"CAD","in_stock":true},{"title":"5\" \/ Power Close (PC) \/ End Switch","offer_id":43092547600427,"sku":"HAC-0512-SPC-L","price":278.0,"currency_code":"CAD","in_stock":true},{"title":"6\" \/ Power Open (PO) \/ No End Switch","offer_id":43092543471659,"sku":"HAC-0612-OPO-L","price":253.0,"currency_code":"CAD","in_stock":true},{"title":"6\" \/ Power Open (PO) \/ End Switch","offer_id":43092547633195,"sku":"HAC-0612-SPO-L","price":282.0,"currency_code":"CAD","in_stock":true},{"title":"6\" \/ Power Close (PC) \/ No End Switch","offer_id":43092547665963,"sku":"HAC-0612-OPC-L","price":253.0,"currency_code":"CAD","in_stock":true},{"title":"6\" \/ Power Close (PC) \/ End Switch","offer_id":43092547698731,"sku":"HAC-0612-SPC-L","price":282.0,"currency_code":"CAD","in_stock":true},{"title":"7\" \/ Power Open (PO) \/ No End Switch","offer_id":43092543504427,"sku":"HAC-0712-OPO-L","price":256.0,"currency_code":"CAD","in_stock":true},{"title":"7\" \/ Power Open (PO) \/ End Switch","offer_id":43092547731499,"sku":"HAC-0712-SPO-L","price":284.0,"currency_code":"CAD","in_stock":true},{"title":"7\" \/ Power Close (PC) \/ No End Switch","offer_id":43092547764267,"sku":"HAC-0712-OPC-L","price":256.0,"currency_code":"CAD","in_stock":true},{"title":"7\" \/ Power Close (PC) \/ End Switch","offer_id":43092547797035,"sku":"HAC-0712-SPC-L","price":284.0,"currency_code":"CAD","in_stock":true},{"title":"8\" \/ Power Open (PO) \/ No End Switch","offer_id":43092543537195,"sku":"HAC-0812-OPO-L","price":259.0,"currency_code":"CAD","in_stock":true},{"title":"8\" \/ Power Open (PO) \/ End Switch","offer_id":43092547829803,"sku":"HAC-0812-SPO-L","price":285.0,"currency_code":"CAD","in_stock":true},{"title":"8\" \/ Power Close (PC) \/ No End Switch","offer_id":43092547862571,"sku":"HAC-0812-OPC-L","price":259.0,"currency_code":"CAD","in_stock":true},{"title":"8\" \/ Power Close (PC) \/ End Switch","offer_id":43092547895339,"sku":"HAC-0812-SPC-L","price":285.0,"currency_code":"CAD","in_stock":true},{"title":"9\" \/ Power Open (PO) \/ No End Switch","offer_id":43092543569963,"sku":"HAC-0912-OPO-L","price":262.0,"currency_code":"CAD","in_stock":true},{"title":"9\" \/ Power Open (PO) \/ End Switch","offer_id":43092547928107,"sku":"HAC-0912-SPO-L","price":288.0,"currency_code":"CAD","in_stock":true},{"title":"9\" \/ Power Close (PC) \/ No End Switch","offer_id":43092547960875,"sku":"HAC-0912-OPC-L","price":262.0,"currency_code":"CAD","in_stock":true},{"title":"9\" \/ Power Close (PC) \/ End Switch","offer_id":43092547993643,"sku":"HAC-0912-SPC-L","price":288.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0647\/3459\/3067\/files\/image_72.png?v=1775768341"},{"product_id":"moh-motorized-all-weather-hood-24vac","title":"MOH Motorized All-Weather Hood Damper — CSA Certified, 24 Vac, 4\"–9\", Spring Return","description":"\u003cp\u003e\u003cem\u003eProduct image is representative only. Actual product may differ in appearance depending on size, configuration, and options selected at order.\u003c\/em\u003e\u003c\/p\u003e\n\u003cstyle\u003e\n  .moh-desc * { box-sizing: border-box; margin: 0; padding: 0; }\n  .moh-desc { font-family: 'Open Sans', sans-serif; color: #001F3F; line-height: 1.6; font-size: 15px; }\n\n  .moh-desc__intro { font-size: 15px; line-height: 1.75; color: #374151; margin-bottom: 20px; }\n\n  .moh-desc__bullets { display: flex; flex-direction: column; gap: 6px; margin-bottom: 20px; }\n  .moh-desc__bullet { display: flex; align-items: flex-start; gap: 10px; }\n  .moh-desc__bullet-check { color: #C8102E; font-weight: 700; font-size: 14px; flex-shrink: 0; line-height: 1.6; }\n  .moh-desc__bullet-text { font-size: 14px; color: #374151; font-family: 'Open Sans', sans-serif; line-height: 1.6; }\n  .moh-desc__bullet-text strong { font-family: 'Montserrat', sans-serif; font-weight: 700; color: #001F3F; }\n\n  .moh-desc__warning { background: #fff3f4; border-left: 4px solid #C8102E; border-radius: 0 4px 4px 0; padding: 12px 16px; margin-bottom: 20px; font-size: 13.5px; color: #001F3F; font-family: 'Open Sans', sans-serif; line-height: 1.6; }\n  .moh-desc__warning strong { font-family: 'Montserrat', sans-serif; font-weight: 700; color: #C8102E; }\n\n  .moh-desc__note { background: #F3F6F8; border-left: 4px solid #001F3F; border-radius: 0 4px 4px 0; padding: 12px 16px; margin-bottom: 20px; font-size: 13.5px; color: #001F3F; font-family: 'Open Sans', sans-serif; line-height: 1.6; }\n  .moh-desc__note strong { font-family: 'Montserrat', sans-serif; font-weight: 700; }\n  .moh-desc__note a { color: #C8102E; text-decoration: none; font-weight: 600; }\n\n  .moh-desc__compare { display: grid; grid-template-columns: 1fr 1fr; gap: 8px; margin-bottom: 20px; }\n  .moh-desc__compare-card { background: #F3F6F8; border: 1px solid #e2e8f0; border-radius: 5px; padding: 12px 14px; }\n  .moh-desc__compare-card--red { border-top: 3px solid #C8102E; }\n  .moh-desc__compare-card--navy { border-top: 3px solid #001F3F; }\n  .moh-desc__compare-title { font-family: 'Montserrat', sans-serif; font-size: 12px; font-weight: 800; color: #001F3F; margin-bottom: 8px; }\n  .moh-desc__compare-item { display: flex; align-items: flex-start; gap: 7px; margin-bottom: 5px; }\n  .moh-desc__compare-item:last-child { margin-bottom: 0; }\n  .moh-desc__compare-dot--red { color: #C8102E; font-weight: 700; font-size: 13px; flex-shrink: 0; line-height: 1.5; }\n  .moh-desc__compare-dot--navy { color: #001F3F; font-weight: 700; font-size: 13px; flex-shrink: 0; line-height: 1.5; }\n  .moh-desc__compare-text { font-size: 12.5px; color: #374151; font-family: 'Open Sans', sans-serif; line-height: 1.45; }\n\n  .moh-desc__specs { display: grid; grid-template-columns: repeat(auto-fill, minmax(160px, 1fr)); gap: 8px; margin-bottom: 20px; }\n  .moh-desc__spec { background: #F3F6F8; border: 1px solid #e2e8f0; border-radius: 5px; padding: 10px 12px; }\n  .moh-desc__spec-label { font-family: 'Montserrat', sans-serif; font-size: 10px; font-weight: 700; text-transform: uppercase; letter-spacing: 0.07em; color: #718096; margin-bottom: 3px; }\n  .moh-desc__spec-value { font-family: 'Montserrat', sans-serif; font-size: 12.5px; font-weight: 700; color: #001F3F; line-height: 1.35; }\n  .moh-desc__spec--highlight { background: #001F3F; border-color: #001F3F; }\n  .moh-desc__spec--highlight .moh-desc__spec-label { color: rgba(255,255,255,0.5); }\n  .moh-desc__spec--highlight .moh-desc__spec-value { color: #FFFFFF; }\n  .moh-desc__spec--red { background: #fff3f4; border-color: #C8102E; }\n  .moh-desc__spec--red .moh-desc__spec-label { color: #C8102E; }\n  .moh-desc__spec--red .moh-desc__spec-value { color: #C8102E; }\n  .moh-desc__spec--amber { background: #fffbeb; border-color: #d97706; }\n  .moh-desc__spec--amber .moh-desc__spec-label { color: #92400e; }\n  .moh-desc__spec--amber .moh-desc__spec-value { color: #92400e; }\n\n  .moh-desc__warranty { display: flex; align-items: center; gap: 10px; background: #001F3F; border-radius: 5px; padding: 12px 16px; }\n  .moh-desc__warranty-text { font-family: 'Montserrat', sans-serif; font-size: 13px; font-weight: 700; color: #FFFFFF; }\n  .moh-desc__warranty-sub { font-size: 12px; color: rgba(255,255,255,0.6); font-family: 'Open Sans', sans-serif; margin-top: 2px; }\n\n  @media (max-width: 480px) {\n    .moh-desc__compare { grid-template-columns: 1fr; }\n  }\n\u003c\/style\u003e\n\n\u003cdiv class=\"moh-desc\"\u003e\n\n  \u003cp class=\"moh-desc__intro\"\u003eMotorized all-weather hood damper that mounts at the wall penetration — hood, damper, and flashing in one unit. Seals at the building exterior when the system is off. Same patented Hoyme 24 Vac spring return drive as the HAC and HOM lineup. CSA certified. Sizes 4\"–8\".\u003c\/p\u003e\n\n  \u003cdiv class=\"moh-desc__bullets\"\u003e\n\n    \u003cdiv class=\"moh-desc__bullet\"\u003e\n      \u003cspan class=\"moh-desc__bullet-check\"\u003e✓\u003c\/span\u003e\n      \u003cspan class=\"moh-desc__bullet-text\"\u003e\u003cstrong\u003eSeals at the wall — not in the duct\u003c\/strong\u003e — when the MOH closes, the air path is sealed at the building exterior; no cold air column sitting in the duct between the damper and outside between ventilation cycles\u003c\/span\u003e\n    \u003c\/div\u003e\n\n    \u003cdiv class=\"moh-desc__bullet\"\u003e\n      \u003cspan class=\"moh-desc__bullet-check\"\u003e✓\u003c\/span\u003e\n      \u003cspan class=\"moh-desc__bullet-text\"\u003e\u003cstrong\u003eOne unit replaces two\u003c\/strong\u003e — eliminates the separate all-weather hood and inline damper that a standard HAC + OOH installation requires at two different points in the system\u003c\/span\u003e\n    \u003c\/div\u003e\n\n    \u003cdiv class=\"moh-desc__bullet\"\u003e\n      \u003cspan class=\"moh-desc__bullet-check\"\u003e✓\u003c\/span\u003e\n      \u003cspan class=\"moh-desc__bullet-text\"\u003e\u003cstrong\u003eSame patented Hoyme spring motor drive\u003c\/strong\u003e — stall-protected Synchron motor, nylon bearings; holds against ice load without tripping, clears the obstruction when conditions change\u003c\/span\u003e\n    \u003c\/div\u003e\n\n    \u003c!-- CORRECTION (final pass): Original bullet said \"Adjustable extension sleeve 7½\"–14\" —\n         accommodates standard 2×4 and 2×6 wall assemblies.\" The MOH product bulletin\n         in the technical library states the extension sleeve is OPTIONAL:\n         \"Optional extension sleeve increases 'L' from 7½\" to 14'\"\n         \"Options: screen yes\/no, extension sleeve yes\/no\"\n         Base \"L\" dimension is 7½\" (standard, no sleeve). The extension sleeve must be\n         specified at order if the wall depth exceeds 7½\". Corrected accordingly.\n         Same correction applied to the specs card and warning below. --\u003e\n    \u003cdiv class=\"moh-desc__bullet\"\u003e\n      \u003cspan class=\"moh-desc__bullet-check\"\u003e✓\u003c\/span\u003e\n      \u003cspan class=\"moh-desc__bullet-text\"\u003e\u003cstrong\u003eBase \"L\" dimension 7½\" — extension sleeve available for deeper walls\u003c\/strong\u003e — standard unit fits typical 2×4 wall assemblies (7½\"); optional extension sleeve extends reach up to 14\" for 2×6, stucco, and thicker wall assemblies; specify at order; flashing included\u003c\/span\u003e\n    \u003c\/div\u003e\n\n    \u003cdiv class=\"moh-desc__bullet\"\u003e\n      \u003cspan class=\"moh-desc__bullet-check\"\u003e✓\u003c\/span\u003e\n      \u003cspan class=\"moh-desc__bullet-text\"\u003e\u003cstrong\u003eCSA certified — complete assembly\u003c\/strong\u003e — motor, blade, and housing; covers fresh air intake and combustion air applications for Canadian and US installations\u003c\/span\u003e\n    \u003c\/div\u003e\n\n    \u003cdiv class=\"moh-desc__bullet\"\u003e\n      \u003cspan class=\"moh-desc__bullet-check\"\u003e✓\u003c\/span\u003e\n      \u003cspan class=\"moh-desc__bullet-text\"\u003e\u003cstrong\u003ePO or PC action, end switch available\u003c\/strong\u003e — all factory-set; confirm PO vs. PC before ordering — cannot be changed after installation; end switch required for combustion air appliance interlock\u003c\/span\u003e\n    \u003c\/div\u003e\n\n  \u003c\/div\u003e\n\n  \u003c!-- CORRECTION: Warning previously said \"confirm wall thickness is within the 7½\"–14\"\n       extension sleeve range before ordering.\" This was inaccurate — the 7½\"–14\" range\n       is only achievable with the optional extension sleeve ordered. The base unit fits\n       7½\" wall depth. Corrected to reflect the optional nature of the extension sleeve. --\u003e\n  \u003cdiv class=\"moh-desc__warning\"\u003e\n    \u003cstrong\u003eNot for dryer ventilation.\u003c\/strong\u003e The dryer exhaust environment — high humidity, lint, elevated temperature — is outside the MOH's listed application. Use the \u003ca style=\"color: #c8102e; text-decoration: none; font-weight: 600;\" href=\"\/products\/bdh-back-draft-hood\"\u003eBDH Back Draft Hood\u003c\/a\u003e for dryer exhaust termination. Also confirm wall depth at the installation point: the standard \"L\" dimension is 7½\". If wall depth exceeds 7½\", specify the extension sleeve at order — it extends reach to 14\". Walls exceeding 14\" require factory confirmation.\u003c\/div\u003e\n\n  \u003cdiv class=\"moh-desc__compare\"\u003e\n    \u003cdiv class=\"moh-desc__compare-card moh-desc__compare-card--red\"\u003e\n      \u003cdiv class=\"moh-desc__compare-title\"\u003eUse MOH when…\u003c\/div\u003e\n      \u003cdiv class=\"moh-desc__compare-item\"\u003e\n        \u003cspan class=\"moh-desc__compare-dot--red\"\u003e✓\u003c\/span\u003e\u003cspan class=\"moh-desc__compare-text\"\u003eWall penetration is the natural control point\u003c\/span\u003e\n      \u003c\/div\u003e\n      \u003cdiv class=\"moh-desc__compare-item\"\u003e\n        \u003cspan class=\"moh-desc__compare-dot--red\"\u003e✓\u003c\/span\u003e\u003cspan class=\"moh-desc__compare-text\"\u003eSealing at the building exterior is the priority\u003c\/span\u003e\n      \u003c\/div\u003e\n      \u003cdiv class=\"moh-desc__compare-item\"\u003e\n        \u003cspan class=\"moh-desc__compare-dot--red\"\u003e✓\u003c\/span\u003e\u003cspan class=\"moh-desc__compare-text\"\u003eOne unit instead of separate hood + inline damper\u003c\/span\u003e\n      \u003c\/div\u003e\n      \u003cdiv class=\"moh-desc__compare-item\"\u003e\n        \u003cspan class=\"moh-desc__compare-dot--red\"\u003e✓\u003c\/span\u003e\u003cspan class=\"moh-desc__compare-text\"\u003eRetrofit where replacing the existing hood is the cleaner solution\u003c\/span\u003e\n      \u003c\/div\u003e\n    \u003c\/div\u003e\n    \u003cdiv class=\"moh-desc__compare-card moh-desc__compare-card--navy\"\u003e\n      \u003cdiv class=\"moh-desc__compare-title\"\u003eUse HAC + OOH when…\u003c\/div\u003e\n      \u003cdiv class=\"moh-desc__compare-item\"\u003e\n        \u003cspan class=\"moh-desc__compare-dot--navy\"\u003e→\u003c\/span\u003e\u003cspan class=\"moh-desc__compare-text\"\u003eDamper needs to be in the duct run — not at the wall\u003c\/span\u003e\n      \u003c\/div\u003e\n      \u003cdiv class=\"moh-desc__compare-item\"\u003e\n        \u003cspan class=\"moh-desc__compare-dot--navy\"\u003e→\u003c\/span\u003e\u003cspan class=\"moh-desc__compare-text\"\u003eExisting all-weather hood already in place\u003c\/span\u003e\n      \u003c\/div\u003e\n      \u003cdiv class=\"moh-desc__compare-item\"\u003e\n        \u003cspan class=\"moh-desc__compare-dot--navy\"\u003e→\u003c\/span\u003e\u003cspan class=\"moh-desc__compare-text\"\u003eInsulated damper body needed — see HAC-L\u003c\/span\u003e\n      \u003c\/div\u003e\n      \u003cdiv class=\"moh-desc__compare-item\"\u003e\n        \u003cspan class=\"moh-desc__compare-dot--navy\"\u003e→\u003c\/span\u003e\u003cspan class=\"moh-desc__compare-text\"\u003eHeat bypass needed for zone control — see HAC-H\u003c\/span\u003e\n      \u003c\/div\u003e\n    \u003c\/div\u003e\n  \u003c\/div\u003e\n\n  \u003c!-- Specs card: \"Wall Thickness\" corrected from \"7½\"–14\" adjustable\" to reflect\n       that 7½\" is the standard L dimension and 14\" requires the optional extension sleeve. --\u003e\n  \u003cdiv class=\"moh-desc__specs\"\u003e\n    \u003cdiv class=\"moh-desc__spec moh-desc__spec--highlight\"\u003e\n      \u003cdiv class=\"moh-desc__spec-label\"\u003eSeals at\u003c\/div\u003e\n      \u003cdiv class=\"moh-desc__spec-value\"\u003eBuilding exterior — not in duct\u003c\/div\u003e\n    \u003c\/div\u003e\n    \u003cdiv class=\"moh-desc__spec\"\u003e\n      \u003cdiv class=\"moh-desc__spec-label\"\u003eSizes\u003c\/div\u003e\n      \u003cdiv class=\"moh-desc__spec-value\"\u003e4\"–8\"\u003c\/div\u003e\n    \u003c\/div\u003e\n    \u003cdiv class=\"moh-desc__spec\"\u003e\n      \u003cdiv class=\"moh-desc__spec-label\"\u003eVoltage\u003c\/div\u003e\n      \u003cdiv class=\"moh-desc__spec-value\"\u003e24 Vac, 5W\u003c\/div\u003e\n    \u003c\/div\u003e\n    \u003cdiv class=\"moh-desc__spec\"\u003e\n      \u003cdiv class=\"moh-desc__spec-label\"\u003eAction\u003c\/div\u003e\n      \u003cdiv class=\"moh-desc__spec-value\"\u003ePO or PC\u003c\/div\u003e\n    \u003c\/div\u003e\n    \u003cdiv class=\"moh-desc__spec\"\u003e\n      \u003cdiv class=\"moh-desc__spec-label\"\u003eWall Depth (\"L\")\u003c\/div\u003e\n      \u003cdiv class=\"moh-desc__spec-value\"\u003e7½\" standard; 14\" with optional extension sleeve\u003c\/div\u003e\n    \u003c\/div\u003e\n    \u003cdiv class=\"moh-desc__spec\"\u003e\n      \u003cdiv class=\"moh-desc__spec-label\"\u003eCertification\u003c\/div\u003e\n      \u003cdiv class=\"moh-desc__spec-value\"\u003eCSA — complete assembly\u003c\/div\u003e\n    \u003c\/div\u003e\n    \u003cdiv class=\"moh-desc__spec moh-desc__spec--red\"\u003e\n      \u003cdiv class=\"moh-desc__spec-label\"\u003eNot Suitable For\u003c\/div\u003e\n      \u003cdiv class=\"moh-desc__spec-value\"\u003eDryer ventilation — use BDH\u003c\/div\u003e\n    \u003c\/div\u003e\n    \u003cdiv class=\"moh-desc__spec moh-desc__spec--amber\"\u003e\n      \u003cdiv class=\"moh-desc__spec-label\"\u003eConfirm Before Ordering\u003c\/div\u003e\n      \u003cdiv class=\"moh-desc__spec-value\"\u003eWall depth; extension sleeve if wall \u0026gt; 7½\"\u003c\/div\u003e\n    \u003c\/div\u003e\n  \u003c\/div\u003e\n\n  \u003cdiv class=\"moh-desc__note\"\u003e\n    \u003cstrong\u003eCombustion air interlock?\u003c\/strong\u003e Order the MOH with end switch (SPO or SPC variant). The end switch proves the blade has physically reached the open position before the appliance fires. Select the correct ADP adaptor by appliance type: \u003ca href=\"\/products\/adp-damper-interlock-relay-adaptor\"\u003eADP-0MV2-S5A\u003c\/a\u003e (millivolt), \u003ca href=\"\/products\/adp-damper-interlock-relay-adaptor\"\u003eADP-1102-S5A\u003c\/a\u003e (110 Vac boiler\/tankless), or see the \u003ca href=\"\/products\/adp-damper-interlock-relay-adaptor\"\u003eADP series\u003c\/a\u003e for 24 Vac furnace applications.\u003c\/div\u003e\n\n  \u003cdiv class=\"moh-desc__warranty\"\u003e\n    \u003csvg style=\"flex-shrink: 0;\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" fill=\"none\" viewbox=\"0 0 24 24\" height=\"20\" width=\"20\"\u003e\n      \u003cpath stroke-linejoin=\"round\" stroke-linecap=\"round\" stroke-width=\"1.8\" stroke=\"#C8102E\" d=\"M12 22s8-4 8-10V5l-8-3-8 3v7c0 6 8 10 8 10z\"\u003e\u003c\/path\u003e\n      \u003cpath stroke-linejoin=\"round\" stroke-linecap=\"round\" stroke-width=\"1.8\" stroke=\"#C8102E\" d=\"M9 12l2 2 4-4\"\u003e\u003c\/path\u003e\n    \u003c\/svg\u003e\n    \u003cdiv\u003e\n      \u003cdiv class=\"moh-desc__warranty-text\"\u003e2-year electrical  ·  10-year mechanical warranty\u003c\/div\u003e\n      \u003cdiv class=\"moh-desc__warranty-sub\"\u003eMade in Canada  ·  Same Hoyme spring motor drive as HAC and HOM lineup\u003c\/div\u003e\n    \u003c\/div\u003e\n  \u003c\/div\u003e\n\n\u003c\/div\u003e","brand":"Hoyme Manufacturing","offers":[{"title":"4\" \/ Power Open (PO) \/ Standard","offer_id":43336326021163,"sku":"MOH-0410-OPO","price":251.0,"currency_code":"CAD","in_stock":true},{"title":"4\" \/ Power Open (PO) \/ End Switch","offer_id":43336326053931,"sku":"MOH-0410-SPO","price":277.0,"currency_code":"CAD","in_stock":true},{"title":"4\" \/ Power Close (PC) \/ Standard","offer_id":43336326086699,"sku":"MOH-0410-OPC","price":251.0,"currency_code":"CAD","in_stock":true},{"title":"4\" \/ Power Close (PC) \/ End Switch","offer_id":43336326119467,"sku":"MOH-0410-SPC","price":277.0,"currency_code":"CAD","in_stock":true},{"title":"5\" \/ Power Open (PO) \/ Standard","offer_id":43336326152235,"sku":"MOH-0510-OPO","price":253.0,"currency_code":"CAD","in_stock":true},{"title":"5\" \/ Power Open (PO) \/ End Switch","offer_id":43336326185003,"sku":"MOH-0510-SPO","price":282.0,"currency_code":"CAD","in_stock":true},{"title":"5\" \/ Power Close (PC) \/ Standard","offer_id":43336326217771,"sku":"MOH-0510-OPC","price":253.0,"currency_code":"CAD","in_stock":true},{"title":"5\" \/ Power Close (PC) \/ End Switch","offer_id":43336326250539,"sku":"MOH-0510-SPC","price":282.0,"currency_code":"CAD","in_stock":true},{"title":"6\" \/ Power Open (PO) \/ Standard","offer_id":43336326283307,"sku":"MOH-0610-OPO","price":260.0,"currency_code":"CAD","in_stock":true},{"title":"6\" \/ Power Open (PO) \/ End Switch","offer_id":43336326316075,"sku":"MOH-0610-SPO","price":286.0,"currency_code":"CAD","in_stock":true},{"title":"6\" \/ Power Close (PC) \/ Standard","offer_id":43336326348843,"sku":"MOH-0610-OPC","price":260.0,"currency_code":"CAD","in_stock":true},{"title":"6\" \/ Power Close (PC) \/ End Switch","offer_id":43336326381611,"sku":"MOH-0610-SPC","price":286.0,"currency_code":"CAD","in_stock":true},{"title":"7\" \/ Power Open (PO) \/ Standard","offer_id":43336326414379,"sku":"MOH-0710-OPO","price":264.0,"currency_code":"CAD","in_stock":true},{"title":"7\" \/ Power Open (PO) \/ End Switch","offer_id":43336326447147,"sku":"MOH-0710-SPO","price":290.0,"currency_code":"CAD","in_stock":true},{"title":"7\" \/ Power Close (PC) \/ Standard","offer_id":43336326479915,"sku":"MOH-0710-OPC","price":264.0,"currency_code":"CAD","in_stock":true},{"title":"7\" \/ Power Close (PC) \/ End Switch","offer_id":43336326512683,"sku":"MOH-0710-SPC","price":290.0,"currency_code":"CAD","in_stock":true},{"title":"8\" \/ Power Open (PO) \/ Standard","offer_id":43336326545451,"sku":"MOH-0810-OPO","price":268.0,"currency_code":"CAD","in_stock":true},{"title":"8\" \/ Power Open (PO) \/ End Switch","offer_id":43336326578219,"sku":"MOH-0810-SPO","price":296.0,"currency_code":"CAD","in_stock":true},{"title":"8\" \/ Power Close (PC) \/ Standard","offer_id":43336326610987,"sku":"MOH-0810-OPC","price":268.0,"currency_code":"CAD","in_stock":true},{"title":"8\" \/ Power Close (PC) \/ End Switch","offer_id":43336326643755,"sku":"MOH-0810-SPC","price":296.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0647\/3459\/3067\/files\/moh.png?v=1775765988"}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0647\/3459\/3067\/collections\/Hoyme-HAC-opo-lt-2_6426f7a9-6f86-4382-a49a-c27b06c10da9.jpg?v=1775506835","url":"https:\/\/www.hoyme.com\/collections\/csa-certified.oembed","provider":"Hoyme Manufacturing","version":"1.0","type":"link"}