Backdraft Dampers - Steel Frame - WD-200 Series

The WD-200 series backdraft dampers are motorized to open when energized and the spring return closes when de-energized. Model WD-200 has no flange, model WD-210 has a flange on the motor side and model WD-220 has a flange opposite the motor. The WD-200 series is for horizontal or vertical mounting. Electric motorpacks ship separately.

Pressure: Up to 1 in. wg (0.25 kPa)

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

Temperature: Up to 180°F (82°C)

Primary application: Prevent undesirable reverse airflow when installed with roof or sidewall supply (intake) fans.