-40%
4'' Backdraft Damper
$ 32.76
- Description
- Size Guide
Description
4'' Backdraft Damper 403004 Made of galvanized steel. Prevents reverse air flow when fans are shut off. Saves CO2 and prevents odors from flowing backwards. Rubber gasket pre installed on exterior for an air tight seal. Manufactured by DL Wholesale Inc.Rubber gasket pre installed on exterior for an air tight seal.
Saves CO2 and prevents odors
