Description
Galvanized Steel Round Backdraft Damper Standard Materials and Construction
- FRAME: 16 GA. galvanized steel, 7½” deep.
- BLADE: 16 GA. galvanized steel, reinforced for frames over 18” dia.
- AXLE: ½” dia. plated steel stub.
- BEARINGS: Flange oilite bronze.
- SEALS: On frame, ¼” thick closed cell neoprene. Temperature range is -35°F to 180°F.
- FINISH: Mill
