Exhaust Fan Backdraft Damper

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.

Exhaust fan backdraft damper.

Backdraft damper vent draft blocker aluminum faci 4in. The specially formulated fabric sleeve allows maximum air flow only in the desired direction. 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 air from the smaller fan was not exiting out of the house.

So i introduced this seperate backdraft damper and it solved the problem. I ran into a problem. 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. 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.

Quick look at a couple of solutions for stopping cold air blowing back through ventilation vents. A complete line of damper products for fire and smoke control in life safety systems and for airflow control in commercial hvac and industrial systems. One fan is 200 cfm the other is 90 cfm. The cape backdraft damper prevents cold air and moisture from entering the home through dryer vents exhaust fan ducts and range hood ducts.

Get it as soon as fri sep 25. Aldes 6 inch round spring loaded backdraft damper professional grade. Backdraft dampers also called gravity dampers allow airflow in one direction and prevent reverse airflow for use in exhaust or intake hvac systems. I have it installed horizontally.

Tamarack technologies cape backdraft damper opens and closes with minimal airflow in either direction. Ventilation extractor fan backdraft shutter. 99 get it as soon as thu oct 1. Exhaust or mixed air applications.

Available in 4 in 5 in 6 in 7 in.