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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
  • Velocity: Up to 2500 fpm
  • Temperature: Up to 180°F
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