Cerrado

    Backdraft damper, vertical mount, Model WD-330, 18 In Sq, No Flange, Performance up to 2,500 ft/min

    Greenheck Product # WD330-18X18
    Price
    $127.56

    The WD-330 series dampers are designed to prevent reverse airflow in horizontal exhaust applications. The WD-330 features a pressure sensitive blade design that opens and remains open under low velocity conditions. The dampers are opened by air pressure differential and closed by gravity. Galvanized steel, flangeless frame.

    • Width and height furnished approximately 0.125 in. under size
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