{"title":"Make-Up Air Dampers","description":"\u003cp\u003eWhen an exhaust fan, range hood or gas dryer pushes air out of a tight house, the same amount of air has to come back in. Without a planned path it comes down the water heater flue or the furnace vent. A make-up air damper gives that air a dedicated duct, opens when the exhaust runs and seals the duct the rest of the time.\u003c\/p\u003e\n\u003ch2\u003eThree common jobs\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eRange hoods over 400 CFM:\u003c\/strong\u003e the IRC requires make-up air for kitchen exhaust above 400 CFM. Read \u003ca href=\"\/blogs\/news\/range-hood-make-up-air-over-400-cfm-what-the-irc-requires-and-how-to-wire-the-damper\"\u003ewhat the IRC requires and how to wire the damper\u003c\/a\u003e.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOntario homes under OBC 2024:\u003c\/strong\u003e see \u003ca href=\"\/blogs\/news\/obc-2024-make-up-air-9-32\"\u003emake-up air under OBC Section 9.32\u003c\/a\u003e.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eGas dryers:\u003c\/strong\u003e see \u003ca href=\"\/blogs\/news\/gas-dryer-make-up-air-radp-interlock\"\u003ehow to interlock a damper so the dryer only runs when it is open\u003c\/a\u003e.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003ePick the damper\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eInline, 24 Vac:\u003c\/strong\u003e the \u003ca href=\"\/products\/hac-inline-motorized-air-damper-24vac\"\u003eHAC\u003c\/a\u003e, power open, 2 to 9 in. CSA certified. Use the \u003ca href=\"\/products\/hac-12-inline-air-damper-120vac\"\u003eHAC-12\u003c\/a\u003e where only 120 Vac is available at the damper.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDamper in cold or unconditioned space:\u003c\/strong\u003e the insulated \u003ca href=\"\/products\/hac-l-insulated-inline-damper-24vac\"\u003eHAC-L\u003c\/a\u003e or \u003ca href=\"\/products\/hac-12l-insulated-inline-damper-120vac-4-9-cold-climate\"\u003eHAC-12L\u003c\/a\u003e.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNo room for a straight run:\u003c\/strong\u003e the \u003ca href=\"\/products\/hac-e-motorized-elbow-damper-24vac\"\u003eHAC-E motorized elbow damper\u003c\/a\u003e.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAt the wall:\u003c\/strong\u003e the \u003ca href=\"\/products\/mac-terminating-end-fresh-air-damper-24vac\"\u003eMAC terminating-end damper\u003c\/a\u003e or the \u003ca href=\"\/products\/moh-motorized-all-weather-hood-24vac\"\u003eMOH motorized hood\u003c\/a\u003e, which combine the damper and the exterior termination.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eGas dryer air supply:\u003c\/strong\u003e the \u003ca href=\"\/products\/hom-combustion-air-damper-24vac\"\u003eHOM\u003c\/a\u003e, SF1 for a dryer-only duct or SF2 for a duct shared with the furnace.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInline damper with a passive hood:\u003c\/strong\u003e pair the HAC with an \u003ca href=\"\/products\/ooh-all-weather-inlet-hood-4-12in\"\u003eOOH all-weather inlet hood\u003c\/a\u003e at the wall.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003ePick the interlock\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eOpen the damper and start the furnace fan when the exhaust fan runs:\u003c\/strong\u003e the ADP-1101-05A from a 120 Vac exhaust fan switch. No end switch needed on the damper. See the \u003ca href=\"\/blogs\/news\/make-up-air-for-exhaust-fans-adp-1101-05a-interlock-guide\"\u003eADP-1101-05A guide\u003c\/a\u003e.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eThe exhaust fan must wait until the damper proves open:\u003c\/strong\u003e a TPX proving adaptor (ADP-1102-TPX, ADP-1103-TPX, or RADP-1102-TPX for plug-in fans) with an end switch damper (SPO or SPC).\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eGas dryers:\u003c\/strong\u003e the RADP-0241-S10A, or the RADP-0242-S10A where the HAC on the return should also open when the furnace fires.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProve actual airflow, not just blade position:\u003c\/strong\u003e the \u003ca href=\"\/products\/pfs-positive-flow-switch-duct-airflow-sensor\"\u003ePFS positive flow switch\u003c\/a\u003e.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eAll of these are in the \u003ca href=\"\/products\/adp-damper-interlock-relay-adaptor\"\u003eADP relay adaptor\u003c\/a\u003e range, with colour wiring diagrams in every box and in the \u003ca href=\"\/pages\/technical-library\"\u003eTechnical Library\u003c\/a\u003e. Size the make-up air opening to the code in force; whether a given layout satisfies it is for the authority having jurisdiction to confirm.\u003c\/p\u003e\n\u003cp\u003eQuestions on sizing, voltage or wiring? Call technical support at 1-800-661-7382, free for contractors and installers. Sold through HVAC wholesalers across Canada, or order direct here.\u003c\/p\u003e","products":[{"product_id":"hom-combustion-air-damper-24vac","title":"HOM Motorized Combustion Air Damper, CSA Certified, 24 Vac, 4\"–9\", SF1 and SF2","description":"\u003cdiv class=\"hom-desc\"\u003e\n\u003cp class=\"hom-desc__intro\"\u003eCanada\/USA CSA certified motorized combustion air damper for furnaces, boilers, fireplaces and water heaters. It keeps the combustion air intake closed while the appliance is off and opens before the appliance fires. The built-in end switch is wired into the appliance safety circuit, so the appliance cannot fire until the damper has opened. 24 Vac, 4\" to 9\".\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 closed, opens by gravity\u003c\/strong\u003e: the motor holds the damper closed while the appliance is off. On a call for heat, power to the motor is cut and the damper drops open. A power failure or motor failure leaves the combustion air path 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\u003eCanada\/USA CSA certified\u003c\/strong\u003e combustion air damper, 24 Vac\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: wired in series with the thermostat wire to \"W\", so the call for heat reaches the appliance only after the blade has opened\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: leave it up (RUN) for normal operation; down holds the damper open and bypasses the interlock for troubleshooting\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\u003eMounts in the appliance area\u003c\/strong\u003e: fastens to the terminating end of the fresh air inlet duct beside the appliance, with the bracket bottom within one foot above burner level\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. Install the SF2 on, or nearest to, the largest appliance.\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, gravity open\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"hom-desc__spec\"\u003e\n\u003cdiv class=\"hom-desc__spec-label\"\u003eRelay Adaptor\u003c\/div\u003e\n\u003cdiv class=\"hom-desc__spec-value\"\u003eNone on 24 Vac\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\"\u003eCanada\/USA CSA\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 Not on a 24 Vac appliance. The HOM wires directly into the 24 Vac thermostat or aquastat circuit. Use ADP-0MV2-S5A for millivolt (standing pilot) systems or ADP-1102-S5A for 120 Vac safety controls. If the existing safety circuit is not fused, install an in-line fuse between the thermostat wire and HOM wire #1.\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\n\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.hom-desc *{box-sizing:border-box;margin:0;padding:0;}.hom-desc{font-family:'Open Sans',sans-serif;color:#001F3F;line-height:1.6;font-size:15px;}.hom-desc__intro{font-size:15px;line-height:1.75;color:#374151;margin-bottom:20px;}.hom-desc__bullets{display:flex;flex-direction:column;gap:6px;margin-bottom:20px;}.hom-desc__bullet{display:flex;align-items:flex-start;gap:10px;}.hom-desc__bullet-check{color:#C8102E;font-weight:700;font-size:14px;flex-shrink:0;line-height:1.6;}.hom-desc__bullet-text{font-size:14px;color:#374151;font-family:'Open Sans',sans-serif;line-height:1.6;}.hom-desc__bullet-text strong{font-family:'Montserrat',sans-serif;font-weight:700;color:#001F3F;}.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;}.hom-desc__warning strong{font-family:'Montserrat',sans-serif;font-weight:700;color:#C8102E;}.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;}.hom-desc__note strong{font-family:'Montserrat',sans-serif;font-weight:700;}.hom-desc__specs{display:grid;grid-template-columns:repeat(auto-fill,minmax(160px,1fr));gap:8px;margin-bottom:20px;}.hom-desc__spec{background:#F3F6F8;border:1px solid #e2e8f0;border-radius:5px;padding:10px 12px;}.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;}.hom-desc__spec-value{font-family:'Montserrat',sans-serif;font-size:12.5px;font-weight:700;color:#001F3F;line-height:1.35;}.hom-desc__spec--highlight{background:#001F3F;border-color:#001F3F;}.hom-desc__spec--highlight .hom-desc__spec-label{color:rgba(255,255,255,0.5);}.hom-desc__spec--highlight .hom-desc__spec-value{color:#FFFFFF;}.hom-desc__variants{display:grid;grid-template-columns:1fr 1fr;gap:8px;margin-bottom:20px;}.hom-desc__variant{background:#F3F6F8;border:1px solid #e2e8f0;border-radius:5px;padding:12px 14px;}.hom-desc__variant-code{font-family:'Montserrat',sans-serif;font-size:13px;font-weight:800;color:#C8102E;margin-bottom:3px;}.hom-desc__variant-name{font-family:'Montserrat',sans-serif;font-size:11.5px;font-weight:700;color:#001F3F;margin-bottom:4px;}.hom-desc__variant-desc{font-size:12px;color:#374151;font-family:'Open Sans',sans-serif;line-height:1.45;}.hom-desc__warranty{display:flex;align-items:center;gap:10px;background:#001F3F;border-radius:5px;padding:12px 16px;}.hom-desc__warranty-text{font-family:'Montserrat',sans-serif;font-size:13px;font-weight:700;color:#FFFFFF;}.hom-desc__warranty-sub{font-size:12px;color:rgba(255,255,255,0.6);font-family:'Open Sans',sans-serif;margin-top:2px;}@media (max-width:480px){.hom-desc__variants{grid-template-columns:1fr;}}\u003c\/style\u003e\n","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":"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":"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":"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":"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":"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}],"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":"\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 stall-protected Hoyme spring motor drive\u003c\/strong\u003e: 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\u003eCanada\/USA CSA certified\u003c\/strong\u003e\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; confirm the action at order, although it can be converted in the field using the Hoyme conversion procedure\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 set at the factory. It can be converted in the field using the Hoyme conversion procedure, but ordering the right action saves a service call. 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.\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\"\u003eCanada\/USA CSA\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 To interlock the MAC with the furnace fan, use the ADP-0241-05A (24 Vac ventilation switch) or ADP-1101-05A (120 Vac exhaust fan switch). Both open the damper and start the furnace fan together, with no end switch required. Where an exhaust fan must wait until the damper proves open, use a TPX proving adaptor and order the SPO or SPC variant.\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\n\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;}.mac-desc{font-family:'Open Sans',sans-serif;color:#001F3F;line-height:1.6;font-size:15px;}.mac-desc__intro{font-size:15px;line-height:1.75;color:#374151;margin-bottom:20px;}.mac-desc__bullets{display:flex;flex-direction:column;gap:6px;margin-bottom:20px;}.mac-desc__bullet{display:flex;align-items:flex-start;gap:10px;}.mac-desc__bullet-check{color:#C8102E;font-weight:700;font-size:14px;flex-shrink:0;line-height:1.6;}.mac-desc__bullet-text{font-size:14px;color:#374151;font-family:'Open Sans',sans-serif;line-height:1.6;}.mac-desc__bullet-text strong{font-family:'Montserrat',sans-serif;font-weight:700;color:#001F3F;}.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;}.mac-desc__warning strong{font-family:'Montserrat',sans-serif;font-weight:700;color:#C8102E;}.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;}.mac-desc__note strong{font-family:'Montserrat',sans-serif;font-weight:700;}.mac-desc__compare{display:grid;grid-template-columns:1fr 1fr;gap:8px;margin-bottom:20px;}.mac-desc__compare-card{background:#F3F6F8;border:1px solid #e2e8f0;border-radius:5px;padding:12px 14px;}.mac-desc__compare-card--red{border-top:3px solid #C8102E;}.mac-desc__compare-card--navy{border-top:3px solid #001F3F;}.mac-desc__compare-title{font-family:'Montserrat',sans-serif;font-size:12px;font-weight:700;color:#001F3F;margin-bottom:8px;}.mac-desc__compare-item{display:flex;align-items:flex-start;gap:7px;margin-bottom:5px;}.mac-desc__compare-item:last-child{margin-bottom:0;}.mac-desc__compare-dot{font-size:13px;font-weight:700;flex-shrink:0;line-height:1.5;}.mac-desc__compare-dot--red{color:#C8102E;}.mac-desc__compare-dot--navy{color:#001F3F;}.mac-desc__compare-text{font-size:12.5px;color:#374151;font-family:'Open Sans',sans-serif;line-height:1.45;}.mac-desc__specs{display:grid;grid-template-columns:repeat(auto-fill,minmax(160px,1fr));gap:8px;margin-bottom:20px;}.mac-desc__spec{background:#F3F6F8;border:1px solid #e2e8f0;border-radius:5px;padding:10px 12px;}.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;}.mac-desc__spec-value{font-family:'Montserrat',sans-serif;font-size:12.5px;font-weight:700;color:#001F3F;line-height:1.35;}.mac-desc__spec--highlight{background:#001F3F;border-color:#001F3F;}.mac-desc__spec--highlight .mac-desc__spec-label{color:rgba(255,255,255,0.5);}.mac-desc__spec--highlight .mac-desc__spec-value{color:#FFFFFF;}.mac-desc__warranty{display:flex;align-items:center;gap:10px;background:#001F3F;border-radius:5px;padding:12px 16px;}.mac-desc__warranty-text{font-family:'Montserrat',sans-serif;font-size:13px;font-weight:700;color:#FFFFFF;}.mac-desc__warranty-sub{font-size:12px;color:rgba(255,255,255,0.6);font-family:'Open Sans',sans-serif;margin-top:2px;}@media (max-width:480px){.mac-desc__compare{grid-template-columns:1fr;}}\u003c\/style\u003e\n","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 Motorized Inline Air Damper, CSA Certified, 24 Vac, 2\"–9\", Spring Return","description":"\u003cdiv class=\"hac-desc\"\u003e\n\u003cp class=\"hac-desc__intro\"\u003eThe HAC is a 24 Vac motorized inline damper for fresh air intake, make-up air, HRV\/ERV duct control and zone control. Canada\/USA CSA certified, spring return, in round duct sizes from 2\" to 9\". Installed on ventilation code compliance jobs 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\u003eCanada\/USA CSA certified\u003c\/strong\u003e, 2\" to 9\"\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\u003ePO or PC action\u003c\/strong\u003e: confirm before ordering. The action can be converted in the field using the Hoyme conversion procedure, but getting it right at order saves a service call\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 proving ADP adaptors (TPX models) and gas dryer RADPs\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 available\u003c\/strong\u003e: motor kits, microswitch kits and spring return kits through your wholesaler; a motor failure does not mean a full damper replacement\u003c\/span\u003e\n\u003c\/div\u003e\n\u003c\/div\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. If it needs to change, the HAC can be converted in the field by removing the motor, reversing the spring plate and remounting the drive, following the Hoyme conversion procedure. PO (power open) is correct for the vast majority of fresh air intake and make-up air applications, because the duct seals when the system is off. PC (power close) is used only when the system design requires the damper to fail open on power loss.\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\"\u003eCanada\/USA CSA\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\"\u003eStall-protected 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\u003cdiv class=\"hac-desc__note\"\u003e\n\u003cstrong\u003eInterlocking with the furnace fan?\u003c\/strong\u003e Use the ADP-0241-05A (24 Vac ventilation switch) or ADP-1101-05A (120 Vac exhaust fan switch) with an OPO or OPC variant; both open the damper and start the furnace fan together. Where an exhaust fan must wait until the damper proves open, use a TPX proving adaptor with the SPO or SPC variant. 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__note\"\u003e\n\u003cstrong\u003eInstallation and wiring documents\u003c\/strong\u003e\u003cbr\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0647\/3459\/3067\/files\/Hoyme-HAC-installation-wiring-instructions.pdf\"\u003eHAC installation and wiring instructions (PDF)\u003c\/a\u003e\u003cbr\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0647\/3459\/3067\/files\/Hoyme-Change-Power-Close-to-Power-Open.pdf\"\u003ePower Close to Power Open field conversion guide (PDF)\u003c\/a\u003e\u003cbr\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0647\/3459\/3067\/files\/Hoyme-HAC-information-sheet.pdf\"\u003eHAC product information sheet (PDF)\u003c\/a\u003e\u003cbr\u003e\u003ca href=\"\/pages\/hac-product-page\"\u003eFull HAC selection guide, FAQ and colour wiring diagrams\u003c\/a\u003e\n\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\n\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  .hac-desc__note a { color: #C8102E; text-decoration: none; font-weight: 600; }\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","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) \/ Relay + End Switch","offer_id":43079379091499,"sku":"HAC-0411-SPO","price":267.0,"currency_code":"CAD","in_stock":true},{"title":"4\" \/ Power Close (PC) \/ Standard (No Relay \/ No End Switch)","offer_id":43079379124267,"sku":"HAC-0410-OPC","price":191.0,"currency_code":"CAD","in_stock":true},{"title":"4\" \/ Power Close (PC) \/ End Switch (No Relay)","offer_id":43079379157035,"sku":"HAC-0410-SPC","price":219.0,"currency_code":"CAD","in_stock":true},{"title":"4\" \/ Power Close (PC) \/ Relay (No End Switch)","offer_id":43079379189803,"sku":"HAC-0411-OPC","price":237.0,"currency_code":"CAD","in_stock":true},{"title":"4\" \/ Power Close (PC) \/ Relay + End Switch","offer_id":43079379222571,"sku":"HAC-0411-SPC","price":267.0,"currency_code":"CAD","in_stock":true},{"title":"5\" \/ Power Open (PO) \/ Standard (No Relay \/ No End Switch)","offer_id":43079379255339,"sku":"HAC-0510-OPO","price":193.0,"currency_code":"CAD","in_stock":true},{"title":"5\" \/ Power Open (PO) \/ End Switch (No 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) \/ Relay + 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) \/ Relay + End Switch","offer_id":43079379484715,"sku":"HAC-0511-SPC","price":268.0,"currency_code":"CAD","in_stock":true},{"title":"6\" \/ Power Open (PO) \/ Standard (No Relay \/ No End Switch)","offer_id":43079379517483,"sku":"HAC-0610-OPO","price":195.0,"currency_code":"CAD","in_stock":true},{"title":"6\" \/ Power Open (PO) \/ End Switch (No Relay)","offer_id":43079379550251,"sku":"HAC-0610-SPO","price":222.0,"currency_code":"CAD","in_stock":true},{"title":"6\" \/ Power Open (PO) \/ Relay (No End Switch)","offer_id":43079379583019,"sku":"HAC-0611-OPO","price":243.0,"currency_code":"CAD","in_stock":true},{"title":"6\" \/ Power Open (PO) \/ Relay + End Switch","offer_id":43079379615787,"sku":"HAC-0611-SPO","price":272.0,"currency_code":"CAD","in_stock":true},{"title":"6\" \/ Power Close (PC) \/ Standard (No Relay \/ No End Switch)","offer_id":43079379648555,"sku":"HAC-0610-OPC","price":195.0,"currency_code":"CAD","in_stock":true},{"title":"6\" \/ Power Close (PC) \/ End Switch (No 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) \/ Relay + 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) \/ Relay + 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) \/ Relay + 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) \/ Relay + 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) \/ Relay + 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) \/ Relay + 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) \/ Relay + 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-l-insulated-inline-damper-24vac","title":"HAC-L Insulated Inline Fresh Air Damper, CSA Certified, 24 Vac, 2\"–9\", Factory-Insulated Body","description":"\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 stall-protected 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: Hoyme 24 Vac spring return, stall-protected, nylon bearings, Canada\/USA CSA certified\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\u003ePO or PC action\u003c\/strong\u003e: confirm before ordering; the action can be converted in the field using the Hoyme conversion procedure\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\"\u003eCanada\/USA CSA\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\u003cdiv class=\"hacl-desc__note\"\u003e\n\u003cstrong\u003eInterlocking with the furnace fan?\u003c\/strong\u003e Use the ADP-0241-05A (24 Vac ventilation switch) or ADP-1101-05A (120 Vac exhaust fan switch) with an OPO or OPC variant; both open the damper and start the furnace fan together. Where an exhaust fan must wait until the damper proves open, use a TPX proving adaptor with the SPO or SPC variant. 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\n\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","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-e-motorized-elbow-damper-24vac","title":"HAC-E Motorized Elbow Damper, 24 Vac, 5\"–9\", Control Built Into the Elbow","description":"\u003cdiv class=\"hace-desc\"\u003e\n\u003cp class=\"hace-desc__intro\"\u003eMotorized elbow damper for round duct fresh air and ventilation control where space constraints prevent installing a standard inline damper in the straight duct run. The damper blade is integrated directly into the elbow fitting: 2-position open\/close control at the direction change, no straight duct sections required. Same stall-protected Hoyme 24 Vac spring return drive as the standard HAC. Sizes 5\"–9\".\u003c\/p\u003e\n\u003cdiv class=\"hace-desc__warning\"\u003e\n\u003cstrong\u003eSpecify the HAC-E only when the elbow is your only option.\u003c\/strong\u003e The standard HAC is always the preferred product when straight duct space is available: the actuator has clear service access and servicing is straightforward. On the HAC-E, the actuator is mounted on the elbow body itself and must be accessible after installation. Plan actuator clearance and service access at rough-in, before the space is closed up.\u003c\/div\u003e\n\u003cdiv class=\"hace-desc__bullets\"\u003e\n\u003cdiv class=\"hace-desc__bullet\"\u003e\n\u003cspan class=\"hace-desc__bullet-check\"\u003e✓\u003c\/span\u003e \u003cspan class=\"hace-desc__bullet-text\"\u003e\u003cstrong\u003eControl built into the elbow\u003c\/strong\u003e: no straight duct required upstream or downstream; designed for tight mechanical rooms and constrained duct layouts\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"hace-desc__bullet\"\u003e\n\u003cspan class=\"hace-desc__bullet-check\"\u003e✓\u003c\/span\u003e \u003cspan class=\"hace-desc__bullet-text\"\u003e\u003cstrong\u003eSame stall-protected Hoyme spring motor drive\u003c\/strong\u003e: nylon bearings, 24 Vac, identical to the standard HAC drive\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"hace-desc__bullet\"\u003e\n\u003cspan class=\"hace-desc__bullet-check\"\u003e✓\u003c\/span\u003e \u003cspan class=\"hace-desc__bullet-text\"\u003e\u003cstrong\u003ePO or PC action\u003c\/strong\u003e: confirm before ordering; the action can be converted in the field using the Hoyme conversion procedure\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"hace-desc__bullet\"\u003e\n\u003cspan class=\"hace-desc__bullet-check\"\u003e✓\u003c\/span\u003e \u003cspan class=\"hace-desc__bullet-text\"\u003e\u003cstrong\u003eProving end switch available\u003c\/strong\u003e: confirms the blade has physically reached position; required for proving ADP adaptors (TPX models) and gas dryer RADPs\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"hace-desc__bullet\"\u003e\n\u003cspan class=\"hace-desc__bullet-check\"\u003e✓\u003c\/span\u003e \u003cspan class=\"hace-desc__bullet-text\"\u003e\u003cstrong\u003eNo relay option\u003c\/strong\u003e: motor code 10 on all sizes; if a relay output is needed at the elbow location, a relay adaptor in the control circuit is the alternative\u003c\/span\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"hace-desc__compare\"\u003e\n\u003cdiv class=\"hace-desc__compare-card hace-desc__compare-card--red\"\u003e\n\u003cdiv class=\"hace-desc__compare-title\"\u003eUse HAC-E when…\u003c\/div\u003e\n\u003cdiv class=\"hace-desc__compare-item\"\u003e\n\u003cspan class=\"hace-desc__compare-dot--red\"\u003e✓\u003c\/span\u003e\u003cspan class=\"hace-desc__compare-text\"\u003eNo straight duct available at the control point: elbow is the only option\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"hace-desc__compare-item\"\u003e\n\u003cspan class=\"hace-desc__compare-dot--red\"\u003e✓\u003c\/span\u003e\u003cspan class=\"hace-desc__compare-text\"\u003eTight mechanical room: adding straight sections before\/after a HAC isn't practical\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"hace-desc__compare-item\"\u003e\n\u003cspan class=\"hace-desc__compare-dot--red\"\u003e✓\u003c\/span\u003e\u003cspan class=\"hace-desc__compare-text\"\u003eRetrofit where existing duct layout only permits control at an elbow\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"hace-desc__compare-item\"\u003e\n\u003cspan class=\"hace-desc__compare-dot--red\"\u003e✓\u003c\/span\u003e\u003cspan class=\"hace-desc__compare-text\"\u003eHRV\/ERV fresh air connection where the elbow is the only viable control point\u003c\/span\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"hace-desc__compare-card hace-desc__compare-card--navy\"\u003e\n\u003cdiv class=\"hace-desc__compare-title\"\u003eUse standard HAC when…\u003c\/div\u003e\n\u003cdiv class=\"hace-desc__compare-item\"\u003e\n\u003cspan class=\"hace-desc__compare-dot--navy\"\u003e→\u003c\/span\u003e\u003cspan class=\"hace-desc__compare-text\"\u003eStraight duct space is available, always the preferred install\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"hace-desc__compare-item\"\u003e\n\u003cspan class=\"hace-desc__compare-dot--navy\"\u003e→\u003c\/span\u003e\u003cspan class=\"hace-desc__compare-text\"\u003eService access needs to be straightforward: actuator on inline body, clear approach\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"hace-desc__compare-item\"\u003e\n\u003cspan class=\"hace-desc__compare-dot--navy\"\u003e→\u003c\/span\u003e\u003cspan class=\"hace-desc__compare-text\"\u003e4\" diameter needed: HAC-E starts at 5\"\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"hace-desc__compare-item\"\u003e\n\u003cspan class=\"hace-desc__compare-dot--navy\"\u003e→\u003c\/span\u003e\u003cspan class=\"hace-desc__compare-text\"\u003eRelay output required: relay not available on HAC-E\u003c\/span\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"hace-desc__specs\"\u003e\n\u003cdiv class=\"hace-desc__spec hace-desc__spec--highlight\"\u003e\n\u003cdiv class=\"hace-desc__spec-label\"\u003eConfiguration\u003c\/div\u003e\n\u003cdiv class=\"hace-desc__spec-value\"\u003eMotorized elbow: blade in fitting\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"hace-desc__spec\"\u003e\n\u003cdiv class=\"hace-desc__spec-label\"\u003eSizes\u003c\/div\u003e\n\u003cdiv class=\"hace-desc__spec-value\"\u003e5\"–9\"\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"hace-desc__spec\"\u003e\n\u003cdiv class=\"hace-desc__spec-label\"\u003eVoltage\u003c\/div\u003e\n\u003cdiv class=\"hace-desc__spec-value\"\u003e24 Vac\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"hace-desc__spec\"\u003e\n\u003cdiv class=\"hace-desc__spec-label\"\u003eAction\u003c\/div\u003e\n\u003cdiv class=\"hace-desc__spec-value\"\u003ePO or PC\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"hace-desc__spec\"\u003e\n\u003cdiv class=\"hace-desc__spec-label\"\u003eEnd Switch\u003c\/div\u003e\n\u003cdiv class=\"hace-desc__spec-value\"\u003eProving: optional (S prefix)\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"hace-desc__spec hace-desc__spec--amber\"\u003e\n\u003cdiv class=\"hace-desc__spec-label\"\u003eRelay\u003c\/div\u003e\n\u003cdiv class=\"hace-desc__spec-value\"\u003eNot available on HAC-E\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"hace-desc__note\"\u003e\n\u003cstrong\u003eInterlocking with the furnace fan?\u003c\/strong\u003e Use the ADP-0241-05A (24 Vac ventilation switch) or ADP-1101-05A (120 Vac exhaust fan switch) with an OPO or OPC variant; both open the damper and start the furnace fan together. Where an exhaust fan must wait until the damper proves open, use a TPX proving adaptor with the SPO or SPC variant. 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=\"hace-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=\"hace-desc__warranty-text\"\u003e2-year electrical · 10-year mechanical warranty\u003c\/div\u003e\n\u003cdiv class=\"hace-desc__warranty-sub\"\u003eMade in Canada · Same Hoyme spring motor drive as the standard HAC\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\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  .hace-desc * { box-sizing: border-box; margin: 0; padding: 0; }\n  .hace-desc { font-family: 'Open Sans', sans-serif; color: #001F3F; line-height: 1.6; font-size: 15px; }\n\n  .hace-desc__intro { font-size: 15px; line-height: 1.75; color: #374151; margin-bottom: 20px; }\n\n  .hace-desc__bullets { display: flex; flex-direction: column; gap: 6px; margin-bottom: 20px; }\n  .hace-desc__bullet { display: flex; align-items: flex-start; gap: 10px; }\n  .hace-desc__bullet-check { color: #C8102E; font-weight: 700; font-size: 14px; flex-shrink: 0; line-height: 1.6; }\n  .hace-desc__bullet-text { font-size: 14px; color: #374151; font-family: 'Open Sans', sans-serif; line-height: 1.6; }\n  .hace-desc__bullet-text strong { font-family: 'Montserrat', sans-serif; font-weight: 700; color: #001F3F; }\n\n  .hace-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  .hace-desc__warning strong { font-family: 'Montserrat', sans-serif; font-weight: 700; color: #C8102E; }\n\n  .hace-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  .hace-desc__note strong { font-family: 'Montserrat', sans-serif; font-weight: 700; }\n  .hace-desc__note a { color: #C8102E; text-decoration: none; font-weight: 600; }\n\n  .hace-desc__compare { display: grid; grid-template-columns: 1fr 1fr; gap: 8px; margin-bottom: 20px; }\n  .hace-desc__compare-card { background: #F3F6F8; border: 1px solid #e2e8f0; border-radius: 5px; padding: 12px 14px; }\n  .hace-desc__compare-card--red { border-top: 3px solid #C8102E; }\n  .hace-desc__compare-card--navy { border-top: 3px solid #001F3F; }\n  .hace-desc__compare-title { font-family: 'Montserrat', sans-serif; font-size: 12px; font-weight: 700; color: #001F3F; margin-bottom: 8px; }\n  .hace-desc__compare-item { display: flex; align-items: flex-start; gap: 7px; margin-bottom: 5px; }\n  .hace-desc__compare-item:last-child { margin-bottom: 0; }\n  .hace-desc__compare-dot--red { color: #C8102E; font-weight: 700; font-size: 13px; flex-shrink: 0; line-height: 1.5; }\n  .hace-desc__compare-dot--navy { color: #001F3F; font-weight: 700; font-size: 13px; flex-shrink: 0; line-height: 1.5; }\n  .hace-desc__compare-text { font-size: 12.5px; color: #374151; font-family: 'Open Sans', sans-serif; line-height: 1.45; }\n\n  .hace-desc__specs { display: grid; grid-template-columns: repeat(auto-fill, minmax(160px, 1fr)); gap: 8px; margin-bottom: 20px; }\n  .hace-desc__spec { background: #F3F6F8; border: 1px solid #e2e8f0; border-radius: 5px; padding: 10px 12px; }\n  .hace-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  .hace-desc__spec-value { font-family: 'Montserrat', sans-serif; font-size: 12.5px; font-weight: 700; color: #001F3F; line-height: 1.35; }\n  .hace-desc__spec--highlight { background: #001F3F; border-color: #001F3F; }\n  .hace-desc__spec--highlight .hace-desc__spec-label { color: rgba(255,255,255,0.5); }\n  .hace-desc__spec--highlight .hace-desc__spec-value { color: #FFFFFF; }\n  .hace-desc__spec--amber { background: #fffbeb; border-color: #d97706; }\n  .hace-desc__spec--amber .hace-desc__spec-label { color: #92400e; }\n  .hace-desc__spec--amber .hace-desc__spec-value { color: #92400e; }\n\n  .hace-desc__warranty { display: flex; align-items: center; gap: 10px; background: #001F3F; border-radius: 5px; padding: 12px 16px; }\n  .hace-desc__warranty-text { font-family: 'Montserrat', sans-serif; font-size: 13px; font-weight: 700; color: #FFFFFF; }\n  .hace-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    .hace-desc__compare { grid-template-columns: 1fr; }\n  }\n\u003c\/style\u003e","brand":"Hoyme Manufacturing","offers":[{"title":"5\" \/ Power Open (PO) \/ Standard (No End Switch)","offer_id":43083241422891,"sku":"HAC-0510-OPO-E","price":193.0,"currency_code":"CAD","in_stock":true},{"title":"5\" \/ Power Open (PO) \/ End Switch (Proving)","offer_id":43083241455659,"sku":"HAC-0510-SPO-E","price":220.0,"currency_code":"CAD","in_stock":true},{"title":"5\" \/ Power Close (PC) \/ Standard (No End Switch)","offer_id":43083241488427,"sku":"HAC-0510-OPC-E","price":193.0,"currency_code":"CAD","in_stock":true},{"title":"5\" \/ Power Close (PC) \/ End Switch (Proving)","offer_id":43083241521195,"sku":"HAC-0510-SPC-E","price":220.0,"currency_code":"CAD","in_stock":true},{"title":"6\" \/ Power Open (PO) \/ Standard (No End Switch)","offer_id":43083241553963,"sku":"HAC-0610-OPO-E","price":195.0,"currency_code":"CAD","in_stock":true},{"title":"6\" \/ Power Open (PO) \/ End Switch (Proving)","offer_id":43083241586731,"sku":"HAC-0610-SPO-E","price":222.0,"currency_code":"CAD","in_stock":true},{"title":"6\" \/ Power Close (PC) \/ Standard (No End Switch)","offer_id":43083241619499,"sku":"HAC-0610-OPC-E","price":195.0,"currency_code":"CAD","in_stock":true},{"title":"6\" \/ Power Close (PC) \/ End Switch (Proving)","offer_id":43083241652267,"sku":"HAC-0610-SPC-E","price":222.0,"currency_code":"CAD","in_stock":true},{"title":"7\" \/ Power Open (PO) \/ Standard (No End Switch)","offer_id":43083241685035,"sku":"HAC-0710-OPO-E","price":196.0,"currency_code":"CAD","in_stock":true},{"title":"7\" \/ Power Open (PO) \/ End Switch (Proving)","offer_id":43083241717803,"sku":"HAC-0710-SPO-E","price":223.0,"currency_code":"CAD","in_stock":true},{"title":"7\" \/ Power Close (PC) \/ Standard (No End Switch)","offer_id":43083241750571,"sku":"HAC-0710-OPC-E","price":196.0,"currency_code":"CAD","in_stock":true},{"title":"7\" \/ Power Close (PC) \/ End Switch (Proving)","offer_id":43083241783339,"sku":"HAC-0710-SPC-E","price":223.0,"currency_code":"CAD","in_stock":true},{"title":"8\" \/ Power Open (PO) \/ Standard (No End Switch)","offer_id":43083241816107,"sku":"HAC-0810-OPO-E","price":199.0,"currency_code":"CAD","in_stock":true},{"title":"8\" \/ Power Open (PO) \/ End Switch (Proving)","offer_id":43083241848875,"sku":"HAC-0810-SPO-E","price":224.0,"currency_code":"CAD","in_stock":true},{"title":"8\" \/ Power Close (PC) \/ Standard (No End Switch)","offer_id":43083241881643,"sku":"HAC-0810-OPC-E","price":199.0,"currency_code":"CAD","in_stock":true},{"title":"8\" \/ Power Close (PC) \/ End Switch (Proving)","offer_id":43083241914411,"sku":"HAC-0810-SPC-E","price":224.0,"currency_code":"CAD","in_stock":true},{"title":"9\" \/ Power Open (PO) \/ Standard (No End Switch)","offer_id":43083241947179,"sku":"HAC-0910-OPO-E","price":204.0,"currency_code":"CAD","in_stock":true},{"title":"9\" \/ Power Open (PO) \/ End Switch (Proving)","offer_id":43083241979947,"sku":"HAC-0910-SPO-E","price":230.0,"currency_code":"CAD","in_stock":true},{"title":"9\" \/ Power Close (PC) \/ Standard (No End Switch)","offer_id":43083242012715,"sku":"HAC-0910-OPC-E","price":204.0,"currency_code":"CAD","in_stock":true},{"title":"9\" \/ Power Close (PC) \/ End Switch (Proving)","offer_id":43083242045483,"sku":"HAC-0910-SPC-E","price":230.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0647\/3459\/3067\/files\/image_50.png?v=1775754396"},{"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":"\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\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\u003cdiv class=\"hac12-desc__warning\"\u003e\n\u003cstrong\u003eConfirm PO vs. PC before ordering.\u003c\/strong\u003e The action is set at the factory. If it needs to change, it can be converted in the field by removing the motor, reversing the spring plate, and remounting the drive, following the Hoyme conversion procedure. 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\u003eCanada\/USA CSA certified\u003c\/strong\u003e\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 interlock 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 interlock\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\"\u003eCanada\/USA CSA\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\u003cdiv class=\"hac12-desc__note\"\u003e\n\u003cstrong\u003eNeed an ADP furnace fan interlock?\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 a furnace fan interlock 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\n\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","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-12l-insulated-inline-damper-120vac-4-9-cold-climate","title":"HAC-12L Insulated Inline Fresh Air Damper, CSA Certified, 120 Vac, Built-In Transformer, Factory-Insulated Body, 4\"–9\"","description":"\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\u003eCanada\/USA CSA certified\u003c\/strong\u003e\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\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\"\u003eCanada\/USA CSA\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  \u003cdiv class=\"hac12l-desc__note\"\u003e\n    \u003cstrong\u003eNeed relay output or an ADP furnace fan interlock?\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\n\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","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\"–8\", Spring Return","description":"\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 stall-protected 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 stall-protected Hoyme spring motor drive\u003c\/strong\u003e: Synchron motor, nylon bearings; holds against ice load without tripping, clears the obstruction when conditions change\u003c\/span\u003e\n    \u003c\/div\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\u003eCanada\/USA CSA certified\u003c\/strong\u003e\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 (it can be converted in the field using the Hoyme conversion procedure); end switch required for combustion air appliance interlock\u003c\/span\u003e\n    \u003c\/div\u003e\n\n  \u003c\/div\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-spring-gravity-4-12in\"\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  \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\"\u003eCanada\/USA CSA\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 call technical support at 1-800-661-7382 to confirm the MOH interlock wiring for 24 Vac furnaces. See the \u003ca href=\"\/products\/adp-damper-interlock-relay-adaptor\"\u003eADP series\u003c\/a\u003e.\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\n\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","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"},{"product_id":"ooh-all-weather-inlet-hood-4-12in","title":"OOH All-Weather Inlet Hood, Passive, Fixed or Removable Screen, 4\"–12\"","description":"\u003cdiv class=\"ooh-desc\"\u003e\n\n  \u003cp class=\"ooh-desc__intro\"\u003ePassive all-weather inlet hood for fresh air intake duct terminations at the building exterior. No motor, no actuator, no wiring, no control sequence. Install at the wall penetration, connect the duct on the interior side, and it's done. Keeps rain, debris, and pests out while allowing outdoor air to enter freely whenever the connected ventilation, combustion air, or make-up air system calls for it. Sizes 4\"–12\".\u003c\/p\u003e\n\n  \u003cdiv class=\"ooh-desc__bullets\"\u003e\n\n    \u003cdiv class=\"ooh-desc__bullet\"\u003e\n      \u003cspan class=\"ooh-desc__bullet-check\"\u003e✓\u003c\/span\u003e\n      \u003cspan class=\"ooh-desc__bullet-text\"\u003e\u003cstrong\u003eInlet only, always open to outdoor air\u003c\/strong\u003e. Damper control is handled by a motorized HAC inline damper in the duct run; the OOH provides weather protection and pest exclusion at the exterior\u003c\/span\u003e\n    \u003c\/div\u003e\n\n    \u003cdiv class=\"ooh-desc__bullet\"\u003e\n      \u003cspan class=\"ooh-desc__bullet-check\"\u003e✓\u003c\/span\u003e\n      \u003cspan class=\"ooh-desc__bullet-text\"\u003e\u003cstrong\u003eFixed screen (regular type)\u003c\/strong\u003e: permanent ¼\" mesh, regular metal default; standard for most residential and commercial fresh air intake applications in mild to moderate climates\u003c\/span\u003e\n    \u003c\/div\u003e\n\n    \u003cdiv class=\"ooh-desc__bullet\"\u003e\n      \u003cspan class=\"ooh-desc__bullet-check\"\u003e✓\u003c\/span\u003e\n      \u003cspan class=\"ooh-desc__bullet-text\"\u003e\u003cstrong\u003eVelcro screen (removable type)\u003c\/strong\u003e: ¼\" mesh removes in seconds for cleaning; painted white default; the right default for cold climates where screen icing is a seasonal maintenance item\u003c\/span\u003e\n    \u003c\/div\u003e\n\n    \u003cdiv class=\"ooh-desc__bullet\"\u003e\n      \u003cspan class=\"ooh-desc__bullet-check\"\u003e✓\u003c\/span\u003e\n      \u003cspan class=\"ooh-desc__bullet-text\"\u003e\u003cstrong\u003eBoth finishes available on both types\u003c\/strong\u003e: fixed screen defaults to regular metal, Velcro defaults to painted white; specify alternate finish at order if needed\u003c\/span\u003e\n    \u003c\/div\u003e\n\n    \u003cdiv class=\"ooh-desc__bullet\"\u003e\n      \u003cspan class=\"ooh-desc__bullet-check\"\u003e✓\u003c\/span\u003e\n      \u003cspan class=\"ooh-desc__bullet-text\"\u003e\u003cstrong\u003eNo power, no wiring, nothing to fail\u003c\/strong\u003e: 10-year mechanical warranty; the OOH will outlast most of the mechanical systems it serves\u003c\/span\u003e\n    \u003c\/div\u003e\n\n  \u003c\/div\u003e\n\n  \u003cdiv class=\"ooh-desc__warning\"\u003e\n    \u003cstrong\u003eInlet only, not for exhaust outlet applications.\u003c\/strong\u003e The fixed-screen OOH traps lint, debris, and moisture on exhaust applications and cannot be used as an outlet. The Velcro type can be converted to outlet use by removing the screen, but the hood body is inlet-geometry. For dedicated exhaust termination use the \u003ca style=\"color: #c8102e; text-decoration: none; font-weight: 600;\" href=\"\/products\/bdh-back-draft-hood-spring-gravity-4-12in\"\u003eBDH Back Draft Hood\u003c\/a\u003e. For motorized open\/close control at the wall see the \u003ca style=\"color: #c8102e; text-decoration: none; font-weight: 600;\" href=\"\/products\/moh-motorized-all-weather-hood-24vac\"\u003eMOH Motorized All-Weather Hood\u003c\/a\u003e.\u003c\/div\u003e\n\n  \u003cdiv class=\"ooh-desc__compare\"\u003e\n    \u003cdiv class=\"ooh-desc__compare-card ooh-desc__compare-card--red\"\u003e\n      \u003cdiv class=\"ooh-desc__compare-title\"\u003eRegular (Fixed Screen): specify when…\u003c\/div\u003e\n      \u003cdiv class=\"ooh-desc__compare-item\"\u003e\n        \u003cspan class=\"ooh-desc__compare-dot--red\"\u003e✓\u003c\/span\u003e\u003cspan class=\"ooh-desc__compare-text\"\u003eMild to moderate climate: screen icing is not a seasonal concern\u003c\/span\u003e\n      \u003c\/div\u003e\n      \u003cdiv class=\"ooh-desc__compare-item\"\u003e\n        \u003cspan class=\"ooh-desc__compare-dot--red\"\u003e✓\u003c\/span\u003e\u003cspan class=\"ooh-desc__compare-text\"\u003eSet-and-forget install, no maintenance access planned\u003c\/span\u003e\n      \u003c\/div\u003e\n      \u003cdiv class=\"ooh-desc__compare-item\"\u003e\n        \u003cspan class=\"ooh-desc__compare-dot--red\"\u003e✓\u003c\/span\u003e\u003cspan class=\"ooh-desc__compare-text\"\u003eRegular metal finish is preferred\u003c\/span\u003e\n      \u003c\/div\u003e\n      \u003cdiv class=\"ooh-desc__compare-item\"\u003e\n        \u003cspan class=\"ooh-desc__compare-dot--red\"\u003e✓\u003c\/span\u003e\u003cspan class=\"ooh-desc__compare-text\"\u003eDuct will remain a fresh air intake permanently\u003c\/span\u003e\n      \u003c\/div\u003e\n    \u003c\/div\u003e\n    \u003cdiv class=\"ooh-desc__compare-card ooh-desc__compare-card--navy\"\u003e\n      \u003cdiv class=\"ooh-desc__compare-title\"\u003eVelcro (Removable Screen): specify when…\u003c\/div\u003e\n      \u003cdiv class=\"ooh-desc__compare-item\"\u003e\n        \u003cspan class=\"ooh-desc__compare-dot--navy\"\u003e→\u003c\/span\u003e\u003cspan class=\"ooh-desc__compare-text\"\u003eCold climate: screen icing or frost accumulation is expected\u003c\/span\u003e\n      \u003c\/div\u003e\n      \u003cdiv class=\"ooh-desc__compare-item\"\u003e\n        \u003cspan class=\"ooh-desc__compare-dot--navy\"\u003e→\u003c\/span\u003e\u003cspan class=\"ooh-desc__compare-text\"\u003eSeasonal screen cleaning is part of the maintenance plan\u003c\/span\u003e\n      \u003c\/div\u003e\n      \u003cdiv class=\"ooh-desc__compare-item\"\u003e\n        \u003cspan class=\"ooh-desc__compare-dot--navy\"\u003e→\u003c\/span\u003e\u003cspan class=\"ooh-desc__compare-text\"\u003ePainted white finish preferred: white siding or trim\u003c\/span\u003e\n      \u003c\/div\u003e\n      \u003cdiv class=\"ooh-desc__compare-item\"\u003e\n        \u003cspan class=\"ooh-desc__compare-dot--navy\"\u003e→\u003c\/span\u003e\u003cspan class=\"ooh-desc__compare-text\"\u003eAny chance the duct may be repurposed to exhaust in future\u003c\/span\u003e\n      \u003c\/div\u003e\n    \u003c\/div\u003e\n  \u003c\/div\u003e\n  \u003cdiv class=\"ooh-desc__specs\"\u003e\n    \u003cdiv class=\"ooh-desc__spec ooh-desc__spec--highlight\"\u003e\n      \u003cdiv class=\"ooh-desc__spec-label\"\u003eApplication\u003c\/div\u003e\n      \u003cdiv class=\"ooh-desc__spec-value\"\u003eInlet only: passive, always open\u003c\/div\u003e\n    \u003c\/div\u003e\n    \u003cdiv class=\"ooh-desc__spec\"\u003e\n      \u003cdiv class=\"ooh-desc__spec-label\"\u003eSizes\u003c\/div\u003e\n      \u003cdiv class=\"ooh-desc__spec-value\"\u003e4\"–12\" (no 11\")\u003c\/div\u003e\n    \u003c\/div\u003e\n    \u003cdiv class=\"ooh-desc__spec\"\u003e\n      \u003cdiv class=\"ooh-desc__spec-label\"\u003eScreen\u003c\/div\u003e\n      \u003cdiv class=\"ooh-desc__spec-value\"\u003e¼\" mesh: fixed or Velcro removable\u003c\/div\u003e\n    \u003c\/div\u003e\n    \u003cdiv class=\"ooh-desc__spec\"\u003e\n      \u003cdiv class=\"ooh-desc__spec-label\"\u003eOperation\u003c\/div\u003e\n      \u003cdiv class=\"ooh-desc__spec-value\"\u003eNo power, no wiring\u003c\/div\u003e\n    \u003c\/div\u003e\n    \u003cdiv class=\"ooh-desc__spec ooh-desc__spec--red\"\u003e\n      \u003cdiv class=\"ooh-desc__spec-label\"\u003eNot Suitable For\u003c\/div\u003e\n      \u003cdiv class=\"ooh-desc__spec-value\"\u003eOutlet \/ exhaust applications\u003c\/div\u003e\n    \u003c\/div\u003e\n    \u003cdiv class=\"ooh-desc__spec ooh-desc__spec--amber\"\u003e\n      \u003cdiv class=\"ooh-desc__spec-label\"\u003eCold Climate\u003c\/div\u003e\n      \u003cdiv class=\"ooh-desc__spec-value\"\u003eSpecify the Velcro removable screen\u003c\/div\u003e\n    \u003c\/div\u003e\n    \u003cdiv class=\"ooh-desc__spec\"\u003e\n      \u003cdiv class=\"ooh-desc__spec-label\"\u003eWarranty\u003c\/div\u003e\n      \u003cdiv class=\"ooh-desc__spec-value\"\u003e10-year mechanical\u003c\/div\u003e\n    \u003c\/div\u003e\n  \u003c\/div\u003e\n\n  \u003cdiv class=\"ooh-desc__note\"\u003e\n    \u003cstrong\u003eNeed motorized open\/close control at the wall?\u003c\/strong\u003e The OOH is always open: damper control is handled by an inline \u003ca href=\"\/products\/hac-inline-motorized-air-damper-24vac\"\u003eHAC\u003c\/a\u003e in the duct run. If the wall is the right control point and you want hood and damper in one unit, use the \u003ca href=\"\/products\/moh-motorized-all-weather-hood-24vac\"\u003eMOH Motorized All-Weather Hood\u003c\/a\u003e instead. For combustion air on fuel-burning appliances, pair the OOH with a \u003ca href=\"\/products\/hom-combustion-air-damper-24vac\"\u003eHOM\u003c\/a\u003e, which wires directly into a 24 Vac thermostat circuit; an \u003ca href=\"\/products\/adp-damper-interlock-relay-adaptor\"\u003eADP relay adaptor\u003c\/a\u003e is needed only for millivolt or 110 Vac appliances.\u003c\/div\u003e\n\n  \u003cdiv class=\"ooh-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=\"ooh-desc__warranty-text\"\u003e10-year mechanical warranty\u003c\/div\u003e\n      \u003cdiv class=\"ooh-desc__warranty-sub\"\u003eMade in Canada  ·  No power, no wiring, nothing to fail electrically\u003c\/div\u003e\n    \u003c\/div\u003e\n  \u003c\/div\u003e\n\n\u003c\/div\u003e\n\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  .ooh-desc * { box-sizing: border-box; margin: 0; padding: 0; }\n  .ooh-desc { font-family: 'Open Sans', sans-serif; color: #001F3F; line-height: 1.6; font-size: 15px; }\n  .ooh-desc__intro { font-size: 15px; line-height: 1.75; color: #374151; margin-bottom: 20px; }\n  .ooh-desc__bullets { display: flex; flex-direction: column; gap: 6px; margin-bottom: 20px; }\n  .ooh-desc__bullet { display: flex; align-items: flex-start; gap: 10px; }\n  .ooh-desc__bullet-check { color: #C8102E; font-weight: 700; font-size: 14px; flex-shrink: 0; line-height: 1.6; }\n  .ooh-desc__bullet-text { font-size: 14px; color: #374151; font-family: 'Open Sans', sans-serif; line-height: 1.6; }\n  .ooh-desc__bullet-text strong { font-family: 'Montserrat', sans-serif; font-weight: 700; color: #001F3F; }\n  .ooh-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  .ooh-desc__warning strong { font-family: 'Montserrat', sans-serif; font-weight: 700; color: #C8102E; }\n  .ooh-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  .ooh-desc__note strong { font-family: 'Montserrat', sans-serif; font-weight: 700; }\n  .ooh-desc__note a { color: #C8102E; text-decoration: none; font-weight: 600; }\n  .ooh-desc__compare { display: grid; grid-template-columns: 1fr 1fr; gap: 8px; margin-bottom: 20px; }\n  .ooh-desc__compare-card { background: #F3F6F8; border: 1px solid #e2e8f0; border-radius: 5px; padding: 12px 14px; }\n  .ooh-desc__compare-card--red { border-top: 3px solid #C8102E; }\n  .ooh-desc__compare-card--navy { border-top: 3px solid #001F3F; }\n  .ooh-desc__compare-title { font-family: 'Montserrat', sans-serif; font-size: 13px; font-weight: 800; color: #001F3F; margin-bottom: 8px; }\n  .ooh-desc__compare-item { display: flex; align-items: flex-start; gap: 7px; margin-bottom: 5px; }\n  .ooh-desc__compare-item:last-child { margin-bottom: 0; }\n  .ooh-desc__compare-dot--red { color: #C8102E; font-weight: 700; font-size: 13px; flex-shrink: 0; line-height: 1.5; }\n  .ooh-desc__compare-dot--navy { color: #001F3F; font-weight: 700; font-size: 13px; flex-shrink: 0; line-height: 1.5; }\n  .ooh-desc__compare-text { font-size: 12.5px; color: #374151; font-family: 'Open Sans', sans-serif; line-height: 1.45; }\n  .ooh-desc__specs { display: grid; grid-template-columns: repeat(auto-fill, minmax(160px, 1fr)); gap: 8px; margin-bottom: 20px; }\n  .ooh-desc__spec { background: #F3F6F8; border: 1px solid #e2e8f0; border-radius: 5px; padding: 10px 12px; }\n  .ooh-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  .ooh-desc__spec-value { font-family: 'Montserrat', sans-serif; font-size: 12.5px; font-weight: 700; color: #001F3F; line-height: 1.35; }\n  .ooh-desc__spec--highlight { background: #001F3F; border-color: #001F3F; }\n  .ooh-desc__spec--highlight .ooh-desc__spec-label { color: rgba(255,255,255,0.5); }\n  .ooh-desc__spec--highlight .ooh-desc__spec-value { color: #FFFFFF; }\n  .ooh-desc__spec--red { background: #fff3f4; border-color: #C8102E; }\n  .ooh-desc__spec--red .ooh-desc__spec-label { color: #C8102E; }\n  .ooh-desc__spec--red .ooh-desc__spec-value { color: #C8102E; }\n  .ooh-desc__spec--amber { background: #fffbeb; border-color: #d97706; }\n  .ooh-desc__spec--amber .ooh-desc__spec-label { color: #92400e; }\n  .ooh-desc__spec--amber .ooh-desc__spec-value { color: #92400e; }\n  .ooh-desc__warranty { display: flex; align-items: center; gap: 10px; background: #001F3F; border-radius: 5px; padding: 12px 16px; }\n  .ooh-desc__warranty-text { font-family: 'Montserrat', sans-serif; font-size: 13px; font-weight: 700; color: #FFFFFF; }\n  .ooh-desc__warranty-sub { font-size: 12px; color: rgba(255,255,255,0.6); font-family: 'Open Sans', sans-serif; margin-top: 2px; }\n  @media (max-width: 480px) {\n    .ooh-desc__compare { grid-template-columns: 1fr; }\n  }\n\u003c\/style\u003e","brand":"Hoyme Manufacturing","offers":[{"title":"4\" \/ Fixed Screen Mount","offer_id":43340744491051,"sku":"OOH-0400-000","price":79.0,"currency_code":"CAD","in_stock":true},{"title":"4\" \/ Velcro Screen Mount","offer_id":43340744523819,"sku":"OOH-0400-000-V","price":79.0,"currency_code":"CAD","in_stock":true},{"title":"5\" \/ Fixed Screen Mount","offer_id":43340744556587,"sku":"OOH-0500-000","price":87.0,"currency_code":"CAD","in_stock":true},{"title":"5\" \/ Velcro Screen Mount","offer_id":43340744589355,"sku":"OOH-0500-000-V","price":87.0,"currency_code":"CAD","in_stock":true},{"title":"6\" \/ Fixed Screen Mount","offer_id":43340744622123,"sku":"OOH-0600-000","price":96.0,"currency_code":"CAD","in_stock":true},{"title":"6\" \/ Velcro Screen Mount","offer_id":43340744654891,"sku":"OOH-0600-000-V","price":96.0,"currency_code":"CAD","in_stock":true},{"title":"7\" \/ Fixed Screen Mount","offer_id":43340744687659,"sku":"OOH-0700-000","price":108.0,"currency_code":"CAD","in_stock":true},{"title":"7\" \/ Velcro Screen Mount","offer_id":43340744720427,"sku":"OOH-0700-000-V","price":108.0,"currency_code":"CAD","in_stock":true},{"title":"8\" \/ Fixed Screen Mount","offer_id":43340744753195,"sku":"OOH-0800-000","price":113.0,"currency_code":"CAD","in_stock":true},{"title":"8\" \/ Velcro Screen Mount","offer_id":43340744785963,"sku":"OOH-0800-000-V","price":113.0,"currency_code":"CAD","in_stock":true},{"title":"9\" \/ Fixed Screen Mount","offer_id":43340744818731,"sku":"OOH-0900-000","price":120.0,"currency_code":"CAD","in_stock":true},{"title":"9\" \/ Velcro Screen Mount","offer_id":43340744851499,"sku":"OOH-0900-000-V","price":120.0,"currency_code":"CAD","in_stock":true},{"title":"10\" \/ Fixed Screen Mount","offer_id":43340744884267,"sku":"OOH-1000-000","price":226.0,"currency_code":"CAD","in_stock":true},{"title":"10\" \/ Velcro Screen Mount","offer_id":43340744917035,"sku":"OOH-1000-000-V","price":226.0,"currency_code":"CAD","in_stock":true},{"title":"12\" \/ Fixed Screen Mount","offer_id":43340744949803,"sku":"OOH-1200-000","price":245.0,"currency_code":"CAD","in_stock":true},{"title":"12\" \/ Velcro Screen Mount","offer_id":43340744982571,"sku":"OOH-1200-000-V","price":245.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0647\/3459\/3067\/files\/ooh.png?v=1775765988"},{"product_id":"adp-damper-interlock-relay-adaptor","title":"ADP Interface Relay Adaptors, Pre-Engineered Damper Interlocks for Combustion Air, Fresh Air, Exhaust Fans and Gas Dryers","description":"\u003cdiv class=\"adp-desc\"\u003e\n\u003cp class=\"adp-desc__intro\"\u003ePre-engineered relay adaptor for Hoyme damper interlock sequences. Select the model by appliance type and system voltage: relay ratings, interlock logic, and wiring are already matched and documented. Colour wiring diagrams included in every box. 24 models cover the full range of residential and light commercial Hoyme damper interlock applications. The 8 most common are shown below. See the full model selector on this page for all 24.\u003c\/p\u003e\n\u003cdiv class=\"adp-desc__bullets\"\u003e\n\u003cdiv class=\"adp-desc__bullet\"\u003e\n\u003cspan class=\"adp-desc__bullet-check\"\u003e✓\u003c\/span\u003e \u003cspan class=\"adp-desc__bullet-text\"\u003e\u003cstrong\u003eRelay ratings pre-matched to the safety circuit\u003c\/strong\u003e: getting this wrong loads the safety circuit and causes nuisance lockouts or damage; the ADP is matched at the factory so the field wiring is the only variable\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"adp-desc__bullet\"\u003e\n\u003cspan class=\"adp-desc__bullet-check\"\u003e✓\u003c\/span\u003e \u003cspan class=\"adp-desc__bullet-text\"\u003e\u003cstrong\u003eColour wiring diagrams included\u003c\/strong\u003e: every box; specific to the model; satisfies the documentation requirement that inspectors look for on permitted installations\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"adp-desc__bullet\"\u003e\n\u003cspan class=\"adp-desc__bullet-check\"\u003e✓\u003c\/span\u003e \u003cspan class=\"adp-desc__bullet-text\"\u003e\u003cstrong\u003eA\/C circuit not affected\u003c\/strong\u003e: all ADP models are designed so relay logic does not affect the air conditioning circuit; documented in the wiring diagram\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"adp-desc__bullet\"\u003e\n\u003cspan class=\"adp-desc__bullet-check\"\u003e✓\u003c\/span\u003e \u003cspan class=\"adp-desc__bullet-text\"\u003e\u003cstrong\u003eRelays field-replaceable\u003c\/strong\u003e: a relay failure does not require replacing the complete ADP assembly; up to 4 relays per enclosure depending on model\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"adp-desc__bullet\"\u003e\n\u003cspan class=\"adp-desc__bullet-check\"\u003e✓\u003c\/span\u003e \u003cspan class=\"adp-desc__bullet-text\"\u003e\u003cstrong\u003eCompatible with all Hoyme end switch outputs\u003c\/strong\u003e: HOM (SF1\/SF2), HAC (SPO\/SPC), MOH, HAC-F, and Belimo actuator HAC models with end switch option\u003c\/span\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"adp-desc__warning\"\u003e\n\u003cstrong\u003eEnd switch requirement depends on model.\u003c\/strong\u003e Combustion air proving models and end-switch proving models use the end switch signal to confirm the blade has physically reached its open position before allowing the appliance or exhaust fan to activate. Without it, the interlock sequence cannot complete. Simultaneous models activate all outputs at once and do not require an end switch. For combustion air models: the HOM SF1 and SF2 include the end switch. For proving models using HAC: order \u003cstrong\u003eSPO or SPC\u003c\/strong\u003e. For simultaneous models using HAC (ADP-0241-05A, ADP-0242-05A): order \u003cstrong\u003eOPO or OPC\u003c\/strong\u003e. See the compatibility table on this page to confirm requirements for your model.\u003c\/div\u003e\n\u003cdiv class=\"adp-desc__table-wrap\"\u003e\n\u003ctable class=\"adp-desc__table\"\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003eModel\u003c\/th\u003e\n\u003cth\u003eApplication\u003c\/th\u003e\n\u003cth\u003eVoltage\u003c\/th\u003e\n\u003cth\u003eKey Detail\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eADP-0MV2-S5A\u003c\/td\u003e\n\u003ctd\u003eCombustion air: gas furnace with standing pilot \/ thermopile \/ thermocouple safety system\u003c\/td\u003e\n\u003ctd\u003eMillivolt 250mVdc–100Vdc\u003c\/td\u003e\n\u003ctd\u003e2 relays + test\/run switch; the only ADP model for millivolt safety circuits; use HOM SF1 or SF2\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eADP-0241-10A\u003c\/td\u003e\n\u003ctd\u003e24 Vac ventilation switch, 120 Vac fan load up to 10A\u003c\/td\u003e\n\u003ctd\u003e24 Vac\u003c\/td\u003e\n\u003ctd\u003eSame application as ADP-0241-05A with 10A contacts for switching a 120 Vac fan. Not used for HOM combustion air: on a 24 Vac appliance the HOM wires directly to the thermostat circuit\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eADP-0241-05A\u003c\/td\u003e\n\u003ctd\u003eFresh air damper + furnace fan: ventilation code compliance\u003c\/td\u003e\n\u003ctd\u003e24 Vac\u003c\/td\u003e\n\u003ctd\u003eVentilation switch simultaneously opens HAC fresh air damper and activates furnace fan, no end switch required; order HAC OPO or OPC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eADP-1102-S5A\u003c\/td\u003e\n\u003ctd\u003eCombustion air: boiler or tankless water heater\u003c\/td\u003e\n\u003ctd\u003e110 Vac\u003c\/td\u003e\n\u003ctd\u003e5A relay output: standard residential boilers and tankless units; use HOM SF1 or SF2; confirm load rating on appliance spec label\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eADP-1102-10A\u003c\/td\u003e\n\u003ctd\u003eCombustion air: boiler or tankless water heater (higher load)\u003c\/td\u003e\n\u003ctd\u003e110 Vac\u003c\/td\u003e\n\u003ctd\u003e10A relay output: larger commercial-grade boilers and tankless units; use HOM SF1 or SF2; confirm load rating on appliance spec label\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eADP-0242-05A\u003c\/td\u003e\n\u003ctd\u003eExhaust fan switch → fresh air damper + furnace fan simultaneously; damper also opens during furnace firing\u003c\/td\u003e\n\u003ctd\u003e24 Vac\u003c\/td\u003e\n\u003ctd\u003e2 relays (24Vac coil): simultaneous operation; second relay opens damper during furnace firing; no end switch required; order HAC OPO or OPC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eADP-1101-10AS\u003c\/td\u003e\n\u003ctd\u003eTwo 110 Vac exhaust fans: non-concurrent; furnace fan + fresh air damper for either fan\u003c\/td\u003e\n\u003ctd\u003e110 Vac\u003c\/td\u003e\n\u003ctd\u003ePrevents fans running simultaneously; furnace fan + damper activate for whichever fan is on; requires ADP-1101-05A or ADP-1102-TWP companion adaptor\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eADP-0244-05A\u003c\/td\u003e\n\u003ctd\u003eTwo-zone furnace fan control: special order\u003c\/td\u003e\n\u003ctd\u003e24 Vac\u003c\/td\u003e\n\u003ctd\u003eManages fan sequencing for two independent zone damper circuits: special order; confirm lead time with wholesaler\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"adp-desc__specs\"\u003e\n\u003cdiv class=\"adp-desc__spec adp-desc__spec--highlight\"\u003e\n\u003cdiv class=\"adp-desc__spec-label\"\u003eModels\u003c\/div\u003e\n\u003cdiv class=\"adp-desc__spec-value\"\u003e24 total, 8 primary shown\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"adp-desc__spec\"\u003e\n\u003cdiv class=\"adp-desc__spec-label\"\u003eVoltages Covered\u003c\/div\u003e\n\u003cdiv class=\"adp-desc__spec-value\"\u003eMillivolt, 24 Vac, 110 Vac\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"adp-desc__spec\"\u003e\n\u003cdiv class=\"adp-desc__spec-label\"\u003eRelays\u003c\/div\u003e\n\u003cdiv class=\"adp-desc__spec-value\"\u003eUp to 4: field-replaceable\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"adp-desc__spec\"\u003e\n\u003cdiv class=\"adp-desc__spec-label\"\u003eWiring Diagrams\u003c\/div\u003e\n\u003cdiv class=\"adp-desc__spec-value\"\u003eColour: included in every box\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"adp-desc__spec\"\u003e\n\u003cdiv class=\"adp-desc__spec-label\"\u003eA\/C Circuit\u003c\/div\u003e\n\u003cdiv class=\"adp-desc__spec-value\"\u003eNot affected: all models\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"adp-desc__spec adp-desc__spec--red\"\u003e\n\u003cdiv class=\"adp-desc__spec-label\"\u003eEnd Switch\u003c\/div\u003e\n\u003cdiv class=\"adp-desc__spec-value\"\u003eDepends on model: see table\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"adp-desc__note\"\u003e\n\u003cstrong\u003eMillivolt furnace (standing pilot)?\u003c\/strong\u003e Order \u003cstrong\u003eADP-0MV2-S5A\u003c\/strong\u003e: the only model in the series rated for millivolt safety circuits. Standard 24 Vac models will not work. For fresh air damper + furnace fan (ventilation code compliance) order \u003cstrong\u003eADP-0241-05A\u003c\/strong\u003e with a \u003ca href=\"\/products\/hac-inline-motorized-air-damper-24vac\"\u003eHAC OPO or OPC variant\u003c\/a\u003e, no end switch required. For combustion air on a 24 Vac furnace, no adaptor is needed: the \u003ca href=\"\/products\/hom-combustion-air-damper-24vac\"\u003eHOM SF1 or SF2\u003c\/a\u003e wires directly into the thermostat circuit.\u003c\/div\u003e\n\u003cdiv class=\"adp-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=\"adp-desc__warranty-text\"\u003ePre-engineered interlock, relays field-replaceable\u003c\/div\u003e\n\u003cdiv class=\"adp-desc__warranty-sub\"\u003eMade in Canada · Colour wiring diagrams included · A\/C circuit not affected\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\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.adp-desc *{box-sizing:border-box;margin:0;padding:0;}.adp-desc{font-family:'Open Sans',sans-serif;color:#001F3F;line-height:1.6;font-size:15px;}.adp-desc__intro{font-size:15px;line-height:1.75;color:#374151;margin-bottom:20px;}.adp-desc__bullets{display:flex;flex-direction:column;gap:6px;margin-bottom:20px;}.adp-desc__bullet{display:flex;align-items:flex-start;gap:10px;}.adp-desc__bullet-check{color:#C8102E;font-weight:700;font-size:14px;flex-shrink:0;line-height:1.6;}.adp-desc__bullet-text{font-size:14px;color:#374151;font-family:'Open Sans',sans-serif;line-height:1.6;}.adp-desc__bullet-text strong{font-family:'Montserrat',sans-serif;font-weight:700;color:#001F3F;}.adp-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;}.adp-desc__warning strong{font-family:'Montserrat',sans-serif;font-weight:700;color:#C8102E;}.adp-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;}.adp-desc__note strong{font-family:'Montserrat',sans-serif;font-weight:700;}.adp-desc__note a{color:#C8102E;text-decoration:none;font-weight:600;}.adp-desc__table-wrap{overflow-x:auto;margin-bottom:20px;}.adp-desc__table{width:100%;border-collapse:collapse;font-size:12.5px;font-family:'Open Sans',sans-serif;}.adp-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;}.adp-desc__table td{padding:8px 14px;border-bottom:1px solid #e2e8f0;color:#001F3F;vertical-align:top;line-height:1.45;}.adp-desc__table tr:last-child td{border-bottom:none;}.adp-desc__table tr:nth-child(even) td{background:#f8fafc;}.adp-desc__table td:first-child{font-family:'Montserrat',sans-serif;font-weight:800;color:#C8102E;white-space:nowrap;font-size:12px;}.adp-desc__table td:last-child{font-size:12px;color:#718096;}.adp-desc__specs{display:grid;grid-template-columns:repeat(auto-fill,minmax(160px,1fr));gap:8px;margin-bottom:20px;}.adp-desc__spec{background:#F3F6F8;border:1px solid #e2e8f0;border-radius:5px;padding:10px 12px;}.adp-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;}.adp-desc__spec-value{font-family:'Montserrat',sans-serif;font-size:12.5px;font-weight:700;color:#001F3F;line-height:1.35;}.adp-desc__spec--highlight{background:#001F3F;border-color:#001F3F;}.adp-desc__spec--highlight .adp-desc__spec-label{color:rgba(255,255,255,0.5);}.adp-desc__spec--highlight .adp-desc__spec-value{color:#FFFFFF;}.adp-desc__spec--red{background:#fff3f4;border-color:#C8102E;}.adp-desc__spec--red .adp-desc__spec-label{color:#C8102E;}.adp-desc__spec--red .adp-desc__spec-value{color:#C8102E;}.adp-desc__warranty{display:flex;align-items:center;gap:10px;background:#001F3F;border-radius:5px;padding:12px 16px;}.adp-desc__warranty-text{font-family:'Montserrat',sans-serif;font-size:13px;font-weight:700;color:#FFFFFF;}.adp-desc__warranty-sub{font-size:12px;color:rgba(255,255,255,0.6);font-family:'Open Sans',sans-serif;margin-top:2px;}\u003c\/style\u003e","brand":"Hoyme Manufacturing","offers":[{"title":"24 Vac \/ Combustion Air \u0026 Flue \/ Standard","offer_id":43340968230955,"sku":"ADP-0241-10A","price":135.0,"currency_code":"CAD","in_stock":true},{"title":"24 Vac \/ Combustion Air \u0026 Flue \/ Split Receptacle","offer_id":43340968263723,"sku":"RADP-0241-10A","price":142.0,"currency_code":"CAD","in_stock":true},{"title":"24 Vac \/ Damper \u0026 Furnace Fan \/ Standard","offer_id":43340968394795,"sku":"ADP-0241-05A","price":88.0,"currency_code":"CAD","in_stock":true},{"title":"24 Vac \/ Damper \u0026 Furnace Fan \/ Split Receptacle","offer_id":43340968427563,"sku":"RADP-0241-10A","price":142.0,"currency_code":"CAD","in_stock":true},{"title":"24 Vac \/ Gas Dryer \/ Damper \/ Furnace Fan \/ Standard","offer_id":43340968558635,"sku":"ADP-0242-05A","price":118.0,"currency_code":"CAD","in_stock":true},{"title":"24 Vac \/ Gas Dryer \/ Damper \/ Furnace Fan \/ Split Receptacle","offer_id":43340968591403,"sku":"RADP-0241-S10A","price":179.0,"currency_code":"CAD","in_stock":true},{"title":"24 Vac \/ Gas Dryer \/ Damper \/ Furnace Fan \/ On\/Off Switch","offer_id":43340968689707,"sku":"RADP-0242-S10A","price":207.0,"currency_code":"CAD","in_stock":true},{"title":"24 Vac \/ Fresh Air and Thermostat \/ Standard","offer_id":43340968722475,"sku":"ADP-0241-05A","price":88.0,"currency_code":"CAD","in_stock":true},{"title":"24 Vac \/ Exhaust Fan and Furnace \/ Standard","offer_id":43340968886315,"sku":"ADP-0242-05A","price":118.0,"currency_code":"CAD","in_stock":true},{"title":"24 Vac \/ HOM Combustion Air Interlock \/ Standard","offer_id":43340969050155,"sku":"ADP-0241-10A","price":135.0,"currency_code":"CAD","in_stock":true},{"title":"24 Vac \/ General Purpose \/ Standard","offer_id":43340969213995,"sku":"ADP-0240-1WS","price":48.0,"currency_code":"CAD","in_stock":true},{"title":"24 Vac \/ Special Order \/ Standard","offer_id":43340969377835,"sku":"ADP-0243-S5A","price":189.0,"currency_code":"CAD","in_stock":true},{"title":"24 Vac \/ Special Order \/ On\/Off Switch","offer_id":43340969508907,"sku":"ADP-0244-05A","price":284.0,"currency_code":"CAD","in_stock":true},{"title":"120 Vac \/ Combustion Air \u0026 Flue \/ Standard","offer_id":43340969541675,"sku":"ADP-1102-S5A","price":124.0,"currency_code":"CAD","in_stock":true},{"title":"120 Vac \/ Damper \u0026 Furnace Fan \/ Standard","offer_id":43340969705515,"sku":"ADP-1101-05A","price":88.0,"currency_code":"CAD","in_stock":true},{"title":"120 Vac \/ Damper \u0026 Furnace Fan \/ Split Receptacle","offer_id":43340969738283,"sku":"RADP-1102-TPX","price":142.0,"currency_code":"CAD","in_stock":true},{"title":"120 Vac \/ Damper \u0026 Furnace Fan \/ 24Hr Timer","offer_id":43340969771051,"sku":"TMADP-1102-TPX","price":259.0,"currency_code":"CAD","in_stock":true},{"title":"120 Vac \/ Damper \u0026 Furnace Fan \/ 24Hr Timer + Split Receptacle","offer_id":43340969803819,"sku":"TRADP-1102-TPX","price":267.0,"currency_code":"CAD","in_stock":true},{"title":"120 Vac \/ Gas Dryer \/ Damper \/ Furnace Fan \/ Standard","offer_id":43340969869355,"sku":"ADP-1101-10AS","price":135.0,"currency_code":"CAD","in_stock":true},{"title":"120 Vac \/ Gas Dryer \/ Damper \/ Furnace Fan \/ Split Receptacle","offer_id":43340969902123,"sku":"ADP-1101-10AV","price":135.0,"currency_code":"CAD","in_stock":true},{"title":"120 Vac \/ Fresh Air and Thermostat \/ Standard","offer_id":43340970033195,"sku":"ADP-1102-TWP","price":118.0,"currency_code":"CAD","in_stock":true},{"title":"120 Vac \/ Fresh Air and Thermostat \/ 24Hr Timer","offer_id":43340970098731,"sku":"TMADP-1103-TWP","price":289.0,"currency_code":"CAD","in_stock":true},{"title":"120 Vac \/ Exhaust Fan and Furnace \/ Standard","offer_id":43340970197035,"sku":"ADP-1102-TW5","price":118.0,"currency_code":"CAD","in_stock":true},{"title":"120 Vac \/ Exhaust Fan and Furnace \/ Split Receptacle","offer_id":43340970229803,"sku":"ADP-1103-TW5","price":142.0,"currency_code":"CAD","in_stock":true},{"title":"120 Vac \/ HOM Combustion Air Interlock \/ Standard","offer_id":43340970360875,"sku":"ADP-1102-S5A","price":124.0,"currency_code":"CAD","in_stock":true},{"title":"120 Vac \/ HOM Combustion Air Interlock \/ Split Receptacle","offer_id":43340970393643,"sku":"RADP-1102-TPX","price":142.0,"currency_code":"CAD","in_stock":true},{"title":"120 Vac \/ General Purpose \/ Standard","offer_id":43340970524715,"sku":"ADP-1102-10A","price":118.0,"currency_code":"CAD","in_stock":true},{"title":"120 Vac \/ General Purpose \/ Split Receptacle","offer_id":43340970557483,"sku":"ADP-1103-TPX","price":157.0,"currency_code":"CAD","in_stock":true},{"title":"Millivolt \/ 24V \/ 120V \/ Combustion Air \u0026 Flue \/ Standard","offer_id":43340970852395,"sku":"ADP-0MV2-S5A","price":135.0,"currency_code":"CAD","in_stock":true},{"title":"Millivolt \/ 24V \/ 120V \/ HOM Combustion Air Interlock \/ Standard","offer_id":43340971671595,"sku":"ADP-0MV2-S5A","price":135.0,"currency_code":"CAD","in_stock":true},{"title":"Millivolt \/ 24V \/ 120V \/ Special Order \/ Standard","offer_id":43340971999275,"sku":"ADP-024T-S20VA","price":173.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0647\/3459\/3067\/files\/1102-10a.png?v=1775002510"},{"product_id":"pfs-positive-flow-switch-duct-airflow-sensor","title":"PFS Positive Flow Switch, Inline Duct Airflow Confirmation, 24 Vac or 120 Vac, 4\"–9\"","description":"\u003cdiv class=\"pfs-desc\"\u003e\n\u003cp class=\"pfs-desc__intro\"\u003eInline duct flow switch that confirms positive airflow is occurring at the switch location, not just that the fan is running. Factory-mounted externally on a complete galvanized inline duct section. Installs like any inline fitting. Switch signal feeds the ADP relay adaptor or control system. Two voltage options: 24 Vac and 120 Vac. Sizes 4\"–9\".\u003c\/p\u003e\n\u003cdiv class=\"pfs-desc__bullets\"\u003e\n\u003cdiv class=\"pfs-desc__bullet\"\u003e\n\u003cspan class=\"pfs-desc__bullet-check\"\u003e✓\u003c\/span\u003e \u003cspan class=\"pfs-desc__bullet-text\"\u003e\u003cstrong\u003eResponds to air velocity, not static pressure\u003c\/strong\u003e. In a pressurized zone or VAV duct, static pressure can be elevated while airflow through a branch is zero; the PFS paddle deflects only when air is actually moving past it with sufficient velocity\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"pfs-desc__bullet\"\u003e\n\u003cspan class=\"pfs-desc__bullet-check\"\u003e✓\u003c\/span\u003e \u003cspan class=\"pfs-desc__bullet-text\"\u003e\u003cstrong\u003eCatches blocked-screen conditions a current sensor misses\u003c\/strong\u003e: fan runs at full current against an iced intake screen; current sensor reports normal; PFS reports no airflow; the interlock holds the appliance off\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"pfs-desc__bullet\"\u003e\n\u003cspan class=\"pfs-desc__bullet-check\"\u003e✓\u003c\/span\u003e \u003cspan class=\"pfs-desc__bullet-text\"\u003e\u003cstrong\u003eExternal switch body, no electrical components in the air stream\u003c\/strong\u003e. Only the paddle is inside the duct; no wiring, no contacts, no moisture-sensitive components in the airflow path\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"pfs-desc__bullet\"\u003e\n\u003cspan class=\"pfs-desc__bullet-check\"\u003e✓\u003c\/span\u003e \u003cspan class=\"pfs-desc__bullet-text\"\u003e\u003cstrong\u003eComplete inline duct section, not a clip-on probe\u003c\/strong\u003e. Factory assembly installs in the duct run with standard upstream and downstream duct connections; mounts vertically (upward) or horizontally\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"pfs-desc__bullet\"\u003e\n\u003cspan class=\"pfs-desc__bullet-check\"\u003e✓\u003c\/span\u003e \u003cspan class=\"pfs-desc__bullet-text\"\u003e\u003cstrong\u003ePassive contact output\u003c\/strong\u003e: feeds ADP relay adaptor input, thermostat or ventilation controller digital input, or BAS point; select 24 Vac or 120 Vac to match the input circuit of the receiving device\u003c\/span\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"pfs-desc__warning\"\u003e\n\u003cstrong\u003eMounting orientation is vertical (upward) or horizontal only.\u003c\/strong\u003e The paddle element must be oriented correctly relative to airflow and gravity for reliable activation. Do not install at 45 degrees, inverted, or at other angles not specified. Also confirm a minimum 3–5 duct diameters of straight run upstream: do not install directly downstream of elbows or transitions where airflow is turbulent.\u003c\/div\u003e\n\u003cdiv class=\"pfs-desc__table-wrap\"\u003e\n\u003ctable class=\"pfs-desc__table\"\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003eWhat you need to confirm\u003c\/th\u003e\n\u003cth\u003eUse\u003c\/th\u003e\n\u003cth\u003eLimitation\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eDamper blade has physically reached open position\u003c\/td\u003e\n\u003ctd\u003eDamper end switch (HAC SPO\/SPC; built into HOM and HAC-F)\u003c\/td\u003e\n\u003ctd\u003eDoes not confirm airflow: duct could still be blocked downstream\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"pfs-desc__table-highlight\"\u003e\n\u003ctd\u003eActual airflow is occurring in the duct\u003c\/td\u003e\n\u003ctd\u003ePFS: this product\u003c\/td\u003e\n\u003ctd\u003eDoes not confirm blade position, only that air is moving past the PFS location\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBoth blade position AND airflow confirmed\u003c\/td\u003e\n\u003ctd\u003eDamper end switch + PFS in sequence\u003c\/td\u003e\n\u003ctd\u003eHighest assurance: required on some combustion air code interpretations\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"pfs-desc__table-wrap\"\u003e\n\u003ctable class=\"pfs-desc__pn-table\"\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003eSize\u003c\/th\u003e\n\u003cth\u003e24 Vac: Part Number\u003c\/th\u003e\n\u003cth\u003e120 Vac: Part Number\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e4\"\u003c\/td\u003e\n\u003ctd\u003ePFS-0400-024\u003c\/td\u003e\n\u003ctd\u003ePFS-0400-120\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e5\"\u003c\/td\u003e\n\u003ctd\u003ePFS-0500-024\u003c\/td\u003e\n\u003ctd\u003ePFS-0500-120\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e6\"\u003c\/td\u003e\n\u003ctd\u003ePFS-0600-024\u003c\/td\u003e\n\u003ctd\u003ePFS-0600-120\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e7\"\u003c\/td\u003e\n\u003ctd\u003ePFS-0700-024\u003c\/td\u003e\n\u003ctd\u003ePFS-0700-120\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e8\"\u003c\/td\u003e\n\u003ctd\u003ePFS-0800-024\u003c\/td\u003e\n\u003ctd\u003ePFS-0800-120\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e9\"\u003c\/td\u003e\n\u003ctd\u003ePFS-0900-024\u003c\/td\u003e\n\u003ctd\u003ePFS-0900-120\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cdiv class=\"pfs-desc__pn-table-note\"\u003eSelect size to match duct diameter. Select voltage to match the control circuit the switch signal feeds into. For sizes outside 4\"–9\" contact factory.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"pfs-desc__specs\"\u003e\n\u003cdiv class=\"pfs-desc__spec pfs-desc__spec--highlight\"\u003e\n\u003cdiv class=\"pfs-desc__spec-label\"\u003eConfirms\u003c\/div\u003e\n\u003cdiv class=\"pfs-desc__spec-value\"\u003eActual airflow, not fan motor current\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"pfs-desc__spec\"\u003e\n\u003cdiv class=\"pfs-desc__spec-label\"\u003eSizes\u003c\/div\u003e\n\u003cdiv class=\"pfs-desc__spec-value\"\u003e4\"–9\" standard\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"pfs-desc__spec\"\u003e\n\u003cdiv class=\"pfs-desc__spec-label\"\u003eVoltage\u003c\/div\u003e\n\u003cdiv class=\"pfs-desc__spec-value\"\u003e24 Vac or 120 Vac\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"pfs-desc__spec\"\u003e\n\u003cdiv class=\"pfs-desc__spec-label\"\u003eActivation\u003c\/div\u003e\n\u003cdiv class=\"pfs-desc__spec-value\"\u003eAir velocity, not static pressure\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"pfs-desc__spec\"\u003e\n\u003cdiv class=\"pfs-desc__spec-label\"\u003eSwitch Body\u003c\/div\u003e\n\u003cdiv class=\"pfs-desc__spec-value\"\u003eExternal: outside air stream\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"pfs-desc__spec pfs-desc__spec--amber\"\u003e\n\u003cdiv class=\"pfs-desc__spec-label\"\u003eMounting\u003c\/div\u003e\n\u003cdiv class=\"pfs-desc__spec-value\"\u003eVertical (upward) or horizontal only\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"pfs-desc__note\"\u003e\n\u003cstrong\u003eWhere to install in the duct run:\u003c\/strong\u003e on combustion air applications, install downstream of the \u003ca href=\"\/products\/hom-combustion-air-damper-24vac\"\u003eHOM\u003c\/a\u003e or \u003ca href=\"\/products\/moh-motorized-all-weather-hood-24vac\"\u003eMOH\u003c\/a\u003e. When the damper opens and air begins flowing, the PFS, wired into the interlock circuit, confirms actual flow before the appliance is allowed to fire. On fresh air applications, install downstream of the \u003ca href=\"\/products\/hac-inline-motorized-air-damper-24vac\"\u003eHAC\u003c\/a\u003e or \u003ca href=\"\/products\/mac-terminating-end-fresh-air-damper-24vac\"\u003eMAC\u003c\/a\u003e. For sizes outside 4\"–9\" contact factory.\u003c\/div\u003e\n\u003cdiv class=\"pfs-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=\"pfs-desc__warranty-text\"\u003eGalvanized inline duct section, external switch assembly\u003c\/div\u003e\n\u003cdiv class=\"pfs-desc__warranty-sub\"\u003eMade in Canada · No electrical components in the air stream\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\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.pfs-desc *{box-sizing:border-box;margin:0;padding:0;}.pfs-desc{font-family:'Open Sans',sans-serif;color:#001F3F;line-height:1.6;font-size:15px;}.pfs-desc__intro{font-size:15px;line-height:1.75;color:#374151;margin-bottom:20px;}.pfs-desc__bullets{display:flex;flex-direction:column;gap:6px;margin-bottom:20px;}.pfs-desc__bullet{display:flex;align-items:flex-start;gap:10px;}.pfs-desc__bullet-check{color:#C8102E;font-weight:700;font-size:14px;flex-shrink:0;line-height:1.6;}.pfs-desc__bullet-text{font-size:14px;color:#374151;font-family:'Open Sans',sans-serif;line-height:1.6;}.pfs-desc__bullet-text strong{font-family:'Montserrat',sans-serif;font-weight:700;color:#001F3F;}.pfs-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;}.pfs-desc__warning strong{font-family:'Montserrat',sans-serif;font-weight:700;color:#C8102E;}.pfs-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;}.pfs-desc__note strong{font-family:'Montserrat',sans-serif;font-weight:700;}.pfs-desc__note a{color:#C8102E;text-decoration:none;font-weight:600;}.pfs-desc__table-wrap{overflow-x:auto;margin-bottom:20px;}.pfs-desc__table{width:100%;border-collapse:collapse;font-size:12.5px;font-family:'Open Sans',sans-serif;}.pfs-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;}.pfs-desc__table td{padding:8px 14px;border-bottom:1px solid #e2e8f0;color:#001F3F;vertical-align:top;line-height:1.45;}.pfs-desc__table tr:last-child td{border-bottom:none;}.pfs-desc__table tr:nth-child(even) td{background:#f8fafc;}.pfs-desc__table tr.pfs-desc__table-highlight td{background:#F3F6F8;}.pfs-desc__table tr.pfs-desc__table-highlight td:first-child{font-family:'Montserrat',sans-serif;font-weight:800;color:#C8102E;}.pfs-desc__table td:first-child{font-size:12.5px;}.pfs-desc__table td:nth-child(2){font-family:'Montserrat',sans-serif;font-weight:700;color:#374151;font-size:12px;white-space:nowrap;}.pfs-desc__table td:last-child{font-size:12px;color:#718096;}.pfs-desc__pn-table{width:100%;border-collapse:collapse;font-size:12.5px;font-family:'Open Sans',sans-serif;}.pfs-desc__pn-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;}.pfs-desc__pn-table td{padding:7px 12px;border-bottom:1px solid #e2e8f0;color:#001F3F;vertical-align:middle;}.pfs-desc__pn-table tr:last-child td{border-bottom:none;}.pfs-desc__pn-table tr:nth-child(even) td{background:#f8fafc;}.pfs-desc__pn-table td:first-child{font-family:'Montserrat',sans-serif;font-weight:700;color:#C8102E;white-space:nowrap;}.pfs-desc__pn-table-note{font-size:11.5px;color:#718096;font-family:'Open Sans',sans-serif;margin-top:6px;font-style:italic;}.pfs-desc__specs{display:grid;grid-template-columns:repeat(auto-fill,minmax(160px,1fr));gap:8px;margin-bottom:20px;}.pfs-desc__spec{background:#F3F6F8;border:1px solid #e2e8f0;border-radius:5px;padding:10px 12px;}.pfs-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;}.pfs-desc__spec-value{font-family:'Montserrat',sans-serif;font-size:12.5px;font-weight:700;color:#001F3F;line-height:1.35;}.pfs-desc__spec--highlight{background:#001F3F;border-color:#001F3F;}.pfs-desc__spec--highlight .pfs-desc__spec-label{color:rgba(255,255,255,0.5);}.pfs-desc__spec--highlight .pfs-desc__spec-value{color:#FFFFFF;}.pfs-desc__spec--amber{background:#fffbeb;border-color:#d97706;}.pfs-desc__spec--amber .pfs-desc__spec-label{color:#92400e;}.pfs-desc__spec--amber .pfs-desc__spec-value{color:#92400e;}.pfs-desc__warranty{display:flex;align-items:center;gap:10px;background:#001F3F;border-radius:5px;padding:12px 16px;}.pfs-desc__warranty-text{font-family:'Montserrat',sans-serif;font-size:13px;font-weight:700;color:#FFFFFF;}.pfs-desc__warranty-sub{font-size:12px;color:rgba(255,255,255,0.6);font-family:'Open Sans',sans-serif;margin-top:2px;}\u003c\/style\u003e","brand":"Hoyme Manufacturing","offers":[{"title":"4\" \/ 24 Vac","offer_id":43367207993387,"sku":"PFS-0400-024","price":88.0,"currency_code":"CAD","in_stock":true},{"title":"4\" \/ 120 Vac","offer_id":43367467483179,"sku":"PFS-0400-120","price":100.0,"currency_code":"CAD","in_stock":true},{"title":"5\" \/ 24 Vac","offer_id":43367208026155,"sku":"PFS-0500-024","price":88.0,"currency_code":"CAD","in_stock":true},{"title":"5\" \/ 120 Vac","offer_id":43367467515947,"sku":"PFS-0500-120","price":100.0,"currency_code":"CAD","in_stock":true},{"title":"6\" \/ 24 Vac","offer_id":43367208058923,"sku":"PFS-0600-024","price":88.0,"currency_code":"CAD","in_stock":true},{"title":"6\" \/ 120 Vac","offer_id":43367467548715,"sku":"PFS-0700-024","price":102.0,"currency_code":"CAD","in_stock":true},{"title":"7\" \/ 24 Vac","offer_id":43367208091691,"sku":"PFS-0700-120","price":119.0,"currency_code":"CAD","in_stock":true},{"title":"7\" \/ 120 Vac","offer_id":43367467581483,"sku":"PFS-0800-024","price":102.0,"currency_code":"CAD","in_stock":true},{"title":"8\" \/ 24 Vac","offer_id":43367208124459,"sku":"PFS-0600-120","price":100.0,"currency_code":"CAD","in_stock":true},{"title":"8\" \/ 120 Vac","offer_id":43367467614251,"sku":"PFS-0800-120","price":119.0,"currency_code":"CAD","in_stock":true},{"title":"9\" \/ 24 Vac","offer_id":43367208157227,"sku":"PFS-0900-024","price":102.0,"currency_code":"CAD","in_stock":true},{"title":"9\" \/ 120 Vac","offer_id":43367467647019,"sku":"PFS-0900-120","price":119.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0647\/3459\/3067\/files\/pfs.png?v=1775239226"}],"url":"https:\/\/www.hoyme.com\/collections\/make-up-air-dampers.oembed","provider":"Hoyme Manufacturing","version":"1.0","type":"link"}