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Backdraft Damper 20" - 411-STD 20

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Backdraft Damper 20" - 411-STD 20

Item #: WBB771519

Sold By: globalindustrial.com

Ships same day. Estimated lead times do not include weekends or holidays. Transit time is determined by shipping method and destination. Orders requiring credit information might take additional time.

Price: $33.95

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Backdraft Dampers are non-flanged horizontal mount exhaust backdraft damper. The frame is galvanized steel with aluminum blades. The blades have a felt seal on the leading edge for quiet closing and better protection from the weather. Spring assisted to allow the blades to open quickly. Ideal for use in roof curbs, ductwork, or wall collars when using a fan or power roof ventilator. Recommended for horizontal mount exhaust applications.

Product Specifications

    • WIDTH INCHES19-3/4
    • DEPTH INCHES2
    • HEIGHT INCHES19-3/4
    • ROUGH OPENING INCHES20 x 20
    • WEIGHT LBS5
    • CONSTRUCTIONGalvanized Frame / Aluminum Blades
    • VELOCITY FEET PER MINUTE2000
    • FREE AREA SQ. FT.2.17
    • NUMBER OF PANELS1
    • MOUNT TYPEHorizontal
    • TYPEGravity
    • FOR USE WITHPower Roof Ventilators
    • LIMITED WARRANTY YEARS1
    • MANUFACTURER'S PART NUMBER411-STD 20