641Wall Cap in Aluminum; Ventilation Fans

  • Overview
  • Specifications
  • Reviews
  • Answers
    • Wall cap designed for use with 6” round duct
    • Built-in backdraft damper and bird screen keep out unwanted outside air and critters
    • Natural aluminum finish for durability and long life that stands up to the elements (not for use with dryers)
  • 641 is rated 4.9 out of 5 by 10.
    Rated 4 out of 5 by from excellent quality for a wall vent excellent product, the only thing I expected an extension to go through wall instead of adding one
    Date published: 2016-07-05
    Rated 5 out of 5 by from IT IS WHAT I WANTED, HAD THE FEATURE OF SCREENING TO KEEP OUT CRITTERS. HAVE NOT INSTALLED AS OF YET BUT BY THE LOOKS OF IT IT WILL NOT BE DIFFICULT. DO RECOMMEND THIS PRODUCT AND COMPANY
    Date published: 2014-09-06
    Rated 5 out of 5 by from Spring loaded, Quiet. Very good. It was a replacement for a cheaply made vent that had broken. It was installed and works perfectly. The old vent was not spring loaded so the slightest breeze made the flapper go back and forth creating a noise whenever it closed. The new one is spring loaded so that it does not flap in a small breeze. It is also padded where the flapper closes sot it is very quiet. Also the new vent includes a screen to prevent bikrds or othe critters from entering. I would recommend it highly and the price is very low.
    Date published: 2013-06-11
    Rated 5 out of 5 by from does its job unit fits in place and performs its job as well as or better than expected
    Date published: 2013-05-08
    Rated 5 out of 5 by from easy Easy to attach. Functional as described.
    Date published: 2013-04-02
    Rated 5 out of 5 by from 6" Round Duct aluminum wall cap with Damper Product was exactly like pictured and works great.
    Date published: 2012-04-18
    Rated 5 out of 5 by from Incredible This thing works! (and works really well!)
    Date published: 2012-03-08
    Rated 5 out of 5 by from Easy to install and it looks good. The shipping was very fast!
    Date published: 2011-09-02
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  • 2" vent wall cap?

    Do you make a 2" vent wall cap in this style or any other style?
    Asked by: ISA
    Thank you for your question on wall caps. We have two wall caps that are designed to be used with our central vacuum systems and they will accept a two inch OD pipe. They are model 393 and CI330.
    Answered by: NuToneCustomerService
    Date published: 2015-07-14
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