Backdraft Dampers - Steel Frame - WD-300 Series

The WD-300 series backdraft damper prevents reverse airflow in horizontal exhaust applications. Model WD-300 has a flange on intake, model WD-320 has a flange on discharge and model WD-330 does not have a flanged frame. Dampers open using air pressure differential and close by gravity. Optional motorpack converts the damper to motorized operation.

Pressure: Up to 2 in. wg (0.5 kPa)

Velocity: Up to 2500 fpm (13 m/s)

Temperature: Up to 180°F (82°C)