Add to Cart 4'' Backdraft Damper MSRP: Was: Now: $20.38 Made of galvanized steel. Prevents reverse air flow when fans are shut off. Saves CO2 and prevents o…
Add to Cart 12'' Backdraft Damper MSRP: Was: Now: $44.38 Made of galvanized steel. Prevents reverse air flow when fans are shut off. Saves CO2 and prevents o…
Add to Cart 10'' Backdraft Damper MSRP: Was: Now: $37.80 Made of galvanized steel. Prevents reverse air flow when fans are shut off. Saves CO2 and prevents o…
Add to Cart 8'' Backdraft Damper MSRP: Was: Now: $32.38 Made of galvanized steel. Prevents reverse air flow when fans are shut off. Saves CO2 and prevents o…
Add to Cart 6'' Backdraft Damper MSRP: Was: Now: $25.18 Made of galvanized steel. Prevents reverse air flow when fans are shut off. Saves CO2 and prevents o…