Description
Aluminum Round Backdraft Damper Standard Materials and Construction
- FRAME: .080” thk. (nominal) aluminum, 7½” deep.
- BLADE: .080” thk. (nominal) aluminum, reinforced for frames over 18” dia.
- AXLE: ½” dia. aluminum, continuous.
- BEARINGS: Flange oilite bronze.
- SEALS: On frame, ¼” thick closed cell neoprene. Temperature range is -35°F to 180°F.
- FINISH: Mill.