A388

A388

 

Round, Single Blade Galvanized Steel Backdraft Damper
The model A388 true round backdraft damper is a manufactured using 16 gauge galvanized steel. The frame is roll formed with two beads which adds rigidity to the frame and act as a stop for the attached ductwork. This damper is designed to tightly close when the blade contacts the ¼" neoprene seal that is attached to the damper frame. Designed to operate with assist or resort counter balance.
Quick Specs
Minimum Diameter: 4"
Maximum Diameter: 36"
Frame Depth: 7½" Deep
Frame Type: Round (Optional Flanged)
Frame Material:        16 ga. Galvanized Steel
Frame Seals: ¼" Thick Closed Cell Neoprene
Blade Material:         16 ga. Galvanized Steel
Blade Action: Single Blade
Axle: Continuous ½" Diameter Cadmium Plated Steel
Bearings: Flange Bronze Oilite
Finish: Galvanized Steel
Temperature Limits: -35°F - 180°F

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