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    Backdraft Dampers

    Select from a variety of backdraft dampers for commercial applications.
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    BD
    Backdraft dampers, rated for duct velocities up to 1,500 ft/min.
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    WD
    Backdraft dampers, rated for duct velocities up to 2,500 ft/min.
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    Shop Greenheck Backdraft Dampers

    Backdraft dampers (also called gravity dampers) allow airflow in one direction and prevent reverse airflow for use in exhaust or intake HVAC systems. Backdraft dampers can either be operated by gravity (where pressure or velocity opens and closes the damper) or motorized to open and close when required.

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