Description
Product image is representative only. Actual product may differ in appearance depending on size, configuration, and options selected at order.
Custom-manufactured motorized dampers for square and rectangular duct systems — built to your exact dimensions. HCR connects inline to two open duct ends (new construction). HSI slips into existing ductwork through a partial cut on one side only (retrofit). 24 Vac standard, 120 Vac available. Hoyme spring drive or Belimo actuator. Widths 6"–36".
⚠ Non-Returnable Custom Products
HCR and HSI dampers are manufactured to your exact specifications. Dimensions, actuator, action code, voltage, and motor location cannot be changed after manufacture and units cannot be returned once built. Verify every item on the ordering checklist against the job drawings before submitting. If you have any doubt about dimensions, contact the factory before ordering — not after.
✓
Built to your exact dimensions — width, height, actuator, action, voltage, steel gauge, and motor location all specified at order; 26 ga. galvanized steel standard, other gauges available
✓
HSI slip-in for retrofit — one cut, one side only — built 1/8" smaller than ordered dimension to slide inside existing ductwork; 1" flange seats against the duct exterior; no need to cut all four sides or remove a duct section
✓
Hoyme spring drive or Belimo actuator — Hoyme drive for standard on/off PO/PC; specify any Belimo model (TFB24, TFB120, TFB24-SR-T, CMB24-3-T, CMB120-3) for BAS/DDC applications requiring modulating or floating point control
✓
Compatible with ADP-0241-05A interlock — order with end switch; the ADP opens the damper first, proves position, then energizes the furnace fan; prevents cold air dump on ventilation code fresh air installations
✓
Motor mounts on shortest side by default — specify alternate motor location at order if installation clearance requires it; cannot be changed after manufacture
HCR — New Construction
✓Connects inline to two open duct ends — standard duct connection
✓New construction, remodel with open duct runs, duct runs being modified
✓Built to exact ordered dimensions
HSI — Retrofit
→Slips inside existing duct through a partial cut — one side only
→Existing duct run in place; minimal duct modification; tight access
→Built 1/8" smaller than ordered — order the interior duct dimension
1
Width and height — exact interior duct dimensions in inches; measure the duct opening, not the exterior; for HSI, order the interior dimension — the 1/8" undersize is built in at manufacture
2
Type — HCR (inline, new construction) or HSI (slip-in, retrofit)
3
Actuator — Hoyme spring drive (standard) or complete Belimo model number; factory confirms torque compatibility
4
Action — PO (Power Open / Spring Close) or PC (Power Close / Spring Open); confirm with controls designer for Belimo modulating or floating point actuators
5
Voltage — 24 Vac (standard) or 120 Vac
6
Steel gauge — 26 ga. galvanized standard; specify alternate gauge if required
7
Motor location — shortest side (default); specify alternate side if clearance at the installation location requires it
Built to
Your exact dimensions
Width Range
6"–36" custom
Voltage
24 Vac standard / 120 Vac available
Construction
26 ga. galvanized — other gauges available
Returns
Non-returnable — custom manufactured
HSI Undersize
1/8" per face — built in; order interior dimension
Warranty
2-yr electrical / 10-yr mechanical
Round duct application? The standard HAC inline damper series covers 2"–20" round duct in standard stocked configurations without custom ordering — faster lead time, no custom specification required. For ADP fresh air sequencing interlock use ADP-0241-05A — order HCR/HSI with end switch option.
2-year electrical · 10-year mechanical warranty
Custom manufactured in Canada · Non-returnable — verify all specs before ordering