Hoyme Manufacturing Fresh Air Dampers CSA-certified motorized inline and terminating-end dampers for fresh air intake, make-up air, and HRV/ERV duct control. Spring return, 24 Vac standard. Sizes 2"–20". All factory-configured — specify size, action, and options at order.

CSA CertifiedCore product line

Spring ReturnFail-safe operation

9 Products2"–20" round duct

Free Support1-800-661-7382

Large Diameter Dampers

4 products

Showing 1 - 4 of 4 products

Motorized inline dampers for commercial and large residential duct runs from 6" to 30". Quarter-turn ¼" drive, Belimo TFB24, TFB120, and modulating actuator options. CSA certification varies by actuator and size — confirm AHJ requirements before ordering on code-required applications above 12". Includes HAC-50/51, HAC-40, HAC-44, HAC-43, HAC-60, HAC-34, HAC-30, HAC-35, HAC-70, and the HAC-F large diameter flue series.

Showing 1 - 4 of 4 products

HAC-F Large Diameter Motorized Flue Damper — Power Close / Spring Open, 10"–30", Belimo TFB24

From $759.00 CAD

HAC-50 / HAC-51 Inline Air Control Damper — CSA Certified, 24 Vac, 6"–14", Quarter-Turn ¼" Drive

From $256.00 CAD

HAC Inline Damper with Belimo TFB24 — On/Off Spring Return, 24 Vac/dc, 6"–20"

From $605.00 CAD

HAC Inline Damper with Belimo TFB120 — On/Off Spring Return, 100–240 Vac, 6"–20"

From $682.00 CAD

Not sure which product is right for your job?

Call Hoyme technical support — free for contractors and installers. Our team matches the right product to your application and jurisdiction.

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