Air Dampers
Fantech RSK Backdraft Dampers
Backdraft dampers with galvanized steel collar and lightweight aluminum damper blades. Spring loaded for positive closure.
From $15.30
S&P CAR Series Backdraft Dampers
Spring loaded backdraft dampers. Steel body construction and aluminum damper blades.
From $12.00
Suncourt ZC Motorized Zone Dampers
Motorized dampers primarily used for zone control. Normally open or normally closed models. 6, 8, 10 and 12 inch diameters. 120V to 24V transformer included.
From $75.99
S&P MD Series Motorized Dampers
Normally closed, power open, 24V or 120V motorized dampers for round duct. Ideal for zoning. Available in sizes 4 through 14 inch.
From $68.60
S&P MD6-ES24VK Outside Air Motorized Damper Kit
Allows fresh air to enter dwellings to meet building code through a 6” motorized damper controlled by a 24V temperature and humidity monitoring control.
From $143.80
Dayus Opposed Blade Dampers
Rectangular opposed blade dampers with manual slide operator. Extruded aluminum frame with rollformed aluminum blades. Custom sizes. MADE TO ORDER - Any size in 3 days!

Balancing Dampers
Balancing dampers are used to throttle airflow in the shorter ducts, allowing airflow to the more distant branches.
From $15.00
Fantech Iris Dampers
Iris dampers for quiet, precise balancing of ventilation systems. Dampers include calibrated airflow measuring device.
From $56.90
why buy from us?
We're engineers passionate about home ventilation and serious about customer service – so you can count on us for carefully-selected equipment and expert advice to ensure your project is a success from specification to installation.
Your call is answered by qualified people who will gladly discuss your project in detail, advise you professionally and never sell you inappropriate products.