-40%
Tjernlund BD-4 Spring Return Backdraft Damper for 4" Ducts 4"
$ 8.44
- Description
- Size Guide
Description
Tjernlund BD-4 Spring Return Backdraft Damper for 4" Ducts4" spring loaded back draft damper
Galvanized steel collar
Aluminum damper blades
Rubber gaskets for tight seal
Easy installation