Exhaust Fan Backdraft Damper

Backdraft dampers also called gravity dampers allow airflow in one direction and prevent reverse airflow for use in exhaust or intake hvac systems.

Exhaust fan backdraft damper.

Ventilation extractor fan backdraft shutter. 2 pack 4 backdraft damper duct backflow preventer inline fan vent vent deflector professional back draft damper inline spring loaded exhaust pipe check fan valve with 2pcs clamps 18 99 18. I ran into a problem. So i introduced this seperate backdraft damper and it solved the problem.

The cape backdraft damper prevents cold air and moisture from entering the home through dryer vents exhaust fan ducts and range hood ducts. Aldes 6 inch round spring loaded backdraft damper professional grade. Free shipping on your first order shipped by amazon. Tamarack technologies cape backdraft damper opens and closes with minimal airflow in either direction.

The air from the smaller fan was not exiting out of the house. Instead it ended up going through my bigger fan when it wasn t on it didn t have it s own backdraft damper. One fan is 200 cfm the other is 90 cfm. Backdraft dampers can either be operated by gravity where pressure or velocity opens and closes the damper or motorized to open and close when required.

The specially formulated fabric sleeve allows maximum air flow only in the desired direction. Draft blocker backdraft damper duct draft stopper backflow preventer inline fan vent vent deflector 4 inch 4 4 out of 5 stars 123 14 45 14. Exhaust or mixed air applications. I have it installed horizontally.

99 get it as soon as thu oct 1. Available in 4 in 5 in 6 in 7 in. Specifically designed to stop back drafts from your clothes dryer bathroom exhaust fan kitchen fan pellet stove direct vent water heater and direct vent furnace. Backdraft damper vent draft blocker aluminum faci 4in.

Draft blocker backdraft damper duct draft stopper backflow preventer inline fan vent vent deflector 6 inch 4 4 out of 5 stars 117.