The Cape Backdraft Damper opens and closes with minimal airflow in either direction. It does not rust or require any maintenance. Fits inside the duct-see here.
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The Cape Backdraft Damper is silent, produces no metal clanging sounds, tested to UL723 standards and can be installed in horizontal or vertical ductwork.
Bathroom Exhaust ducts (stops the clanging sound during storms and cold air from coming in)
Kitchen exhaust and or range Hoods, individual or trunk. (Annual cleaning/replacement recommended)
Passive inlet to provide fresh air into the home.
Volume discounts available, call 1-800-222-5932 for a quote. Allow one week to ship.
UPS ground shipping within Continental U.S. only, all others please call for quote.
Click here for product specifications
Technical Data Sheet
Air flow and leakage test results
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