Description
Light Duty Aluminum Pressure Relief Backdraft Damper Standard Materials and Construction
- FRAME: Standard ⅝” x 2” x ⅝” extruded aluminum channel, .080” thick (nominal).
- BLADES: .060” thick (nominal) extruded aluminum.
- SHAFT: ³⁄16” plated steel stub.
- SEALS: Polyurethane foam at blade edges, none at jambs.
- BEARINGS: ³⁄16” I.D. Oilite bronze.
