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Gravity Fed Backdraft Damper

The industrial grade R5 insulated gravity backdraft damper is included with all ComfortCool whole house fans and is designed keep hot attic air from entering the homes living space when the home ventilation system is not being used.


The Gravity Back Draft Damper is included in the base price of all of our whole house fans.


No Framing Required:
Designed to fit within 16" or 24" on Center Joists

Due to product improvements and equipment upgrades, performance ratings and specifications are subject to change without notice.