CFM™ BDD Backdraft Damper, Spring Loaded, For Use With: AXC In-Line Centrifugal Duct Fans, 8 Inch Duct, 20 ga Steel, Aluminum, Neoprene Seal, Galvanized
- Simple installation in any position - entire assembly inserts into duct
- Exterior foam gasket assures a tight seal against duct
- 4, 5, 6 and 8 Inch sizes include stamped metal sleeve with center pin design
- Neoprene damper seal minimizes leakage
- Requires from 0.04 to 0.08 Inch WG pressure to open
- Gasket designed to withstand temperatures from -22 to 180 deg F
