Winter weather and extreme cold are causing shipping delays for small parcel and LTL carriers in certain parts of the country, including expedited shipments. Please expect extended lead times.

  DETAILS
Shipping Cutoff Times
Shipping Type Order By
Standard Ground Small Parcel
FREE - On orders over $25 View Transit Map 		7:00 PM CST
Next Day Air
(Calculated at checkout) 		3:00 PM CST
Standard Ground Freight
FREE - On orders over $25 		1:00 PM CST
  • Shipping cutoff times apply to in-stock items. Please note item lead-times when placing your order.
  • Orders placed on weekends or holidays will be processed the next business day.
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    • Product # WD-320

    Vertical mount backdraft damper, Flange on Discharge, Model WD-320

    Greenheck Product # WD-320
    Model WD is a backdraft damper used in ventilation systems, allowing airflow in one direction and preventing airflow in the opposite direction.Rated for duct velocities up to 2,500 ft/min.Horizontal and vertical mounting options.

    Product Variants

    Showing 12 of 12
    SKU DAMPER WIDTH x DAMPER HEIGHT MAX VELOCITY PRESSURE DIFFERENTIAL MAX MOUNTING POSITION PRICE LEAD TIME
    WD320-10X10
    Model: WD
    Model / Size: WD-320
    		10 x 10 in 2500 2 Vertical $147.00
    In stock 
    6 on Hand

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    WD320-12X12
    Model: WD
    Model / Size: WD-320
    		12 x 12 in 2500 2 Vertical $147.00
    15 Days
    Lead Time 

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    WD320-14X14
    Model: WD
    Model / Size: WD-320
    		14 x 14 in 2500 2 Vertical $174.00
    In stock 
    5 on Hand

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    WD320-16X16
    Model: WD
    Model / Size: WD-320
    		16 x 16 in 2500 2 Vertical $174.00
    In stock 
    6 on Hand

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    WD320-18X18
    Model: WD
    Model / Size: WD-320
    		18 x 18 in 2500 2 Vertical $215.00
    In stock 
    7 on Hand

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    WD320-20X20
    Model: WD
    Model / Size: WD-320
    		20 x 20 in 2500 2 Vertical $215.00
    In stock 
    12 on Hand

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    WD320-22X22
    Model: WD
    Model / Size: WD-320
    		22 x 22 in 2500 2 Vertical $261.00
    In stock 
    128 on Hand

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    WD320-26X26
    Model: WD
    Model / Size: WD-320
    		26 x 26 in 2500 2 Vertical $280.00
    In stock 
    111 on Hand

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    WD320-32X32
    Model: WD
    Model / Size: WD-320
    		32 x 32 in 2500 2 Vertical $358.00
    In stock 
    66 on Hand

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    WD320-38X38
    Model: WD
    Model / Size: WD-320
    		38 x 38 in 2500 2 Vertical $495.00
    In stock 
    107 on Hand

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    WD320-44X44
    Model: WD
    Model / Size: WD-320
    		44 x 44 in 2500 2 Vertical -
    Obsolete 
    WD320-50x50
    Model: WD
    Model / Size: WD-320
    		44 x 44 in 2500 2 Vertical $819.00
    In stock 
    78 on Hand

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