5" Backdraft Damper RSK 5
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Backdraft dampers prevent the unwanted flow of air into a house through exhaust ducts when the exhaust fan is off. These sensitive spring-loaded backdraft dampers will accomplish this with minimal effect on the exhaust stream, while providing a good seal against backdrafts. Each is 3 inches long.
- Manufacturer Model # (5" diameter): RSK 5
Item No EFI-5540.09