639Wall Cap for 3-1/4" x 10" Duct for Range Hoods and Bath Ventilation Fans

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  • Maximize the air and sound performance of your Broan ventilation fan or range hood using one of our wide variety of ducting accessories.

    • Overall sizing is 12-3/4" wide x 5-5/8" high. Duct fitting protrudes 4-7/8" from back of cap to allow proper fit to the ductwork (NOT for use with dryer venting)
    • Equipped with a spring-loaded backdraft damper and bird screen to keep nests and small animals on the outside
    • Wall cap is made of 24 gauge CRCQ steel construction with a black electrically-bonded epoxy finish for durability and long life
    • Sold as 1 to a carton
  • (2 Questions : 2 Answers)

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    wind noise?

    This wall cap works well but is there any way to keep the wind from rattling it? Thanks
    Age: Over 65
    Gender: Male
    8 months ago
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    Archie
    Quincy, IL, USA
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    Answer: 
    Thank you for your question on the model 639 wall cap. The 639 has a spring operated damper and normally would not rattle in the wind. Please contact the Technical Service Department at 800-637-1453 for assistance.
    8 months ago
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    Installation instructions show the cap mounted horizontally.
    Can I install the cap pointing down 45 degrees from horizontal?
    Age: 45-54
    Gender: Male
    1 week, 1 day ago
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    David
    Arizona, USA
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    Answer: 
    Thank you for your question on the model 639 wall cap. The 639 is designed to be installed horizontally. Please contact the Technical Service Department at 800-637-1453 for further assistance.
    1 week ago
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