634Roof Cap in Black; Ventilation Fans

  • Overview
  • Specifications
  • Reviews
  • Answers
    • Roof cap fits 3-1/4” x 10” or up to 8” round duct for versatility
    • Built-in backdraft damper and bird screen keep out unwanted outside air and critters
    • Steel baked black enamel finish for durability and long life that stands up to the elements (not for use with dryers)
  • 634 is rated 3.0 out of 5 by 7.
    Rated 1 out of 5 by from Roof cap This roof cap does not make a closed connection with either an 8" round or a 3 1/4 x 10" with out an adapter. It is roughly a 10" square. I had to have an adapter made to attach to attach to the attic side to connect the duct. Broan didn't show any other part needed to complete the vent connections on the schematics.
    Date published: 2014-08-18
    Rated 3 out of 5 by from Did The Job Did not fit the 3-1/4 x 10 without snipping inside metal off and it did not sit down flat because of metal ridges. Not really satisfied with fit, but could find no other product for that size roof cap. If it had fit it would have been a good product.
    Date published: 2013-04-25
    Rated 2 out of 5 by from 8" Range Hood Roof Vent This hood was to be used with an 8" duct pipe. The vent should have come with an adapter to mate directly to this size pipe. The other (2) 6" roof vents (Broan model 634M) that I purchased had 6" collars to mate with the pipe. This would have made a far more secure, and better sealed attachment to the range hood duct. As a result, I needed to fricate a collar that could be attached to the underside of the roof sheeting.
    Date published: 2012-09-20
    Rated 5 out of 5 by from exactly what we needed at the right price!! We are a non-profit weatherization agency and getting the products we use at a great price is essencial to maximizing the number of people we can help!! Appreciate the great prices and fast delivery!!
    Date published: 2012-04-10
    Rated 4 out of 5 by from Broan Roof Vent Well-built for the most part, Bird screening falls out too easily.
    Date published: 2011-09-01
    Rated 1 out of 5 by from stuck open- stuck closed The flapper does not open/close properly. It also does not seal when closed.
    Date published: 2010-08-30
    Rated 5 out of 5 by from Just what I needed The item work perfectly for me and was shipped super fast. Thanks!
    Date published: 2008-09-29
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  • What is the CFM for the 634 Roof cap unit. It is designed for 8" round duct

    Asked by: Bill
    Thank you for your question on the model 634 roof cap. The 634 does not have a motor in it, so it would not have a CFM rating. The 634 will accept a 3-1/4” x 10” rectangular or up to 8” round duct work.
    Answered by: NuToneCustomerService
    Date published: 2015-03-16
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