636Roof Cap, Black, 3" or 4" Round Duct

  • Overview
  • Specifications
  • Reviews
  • Answers
  • For 3" or 4" round duct.
    • Built-in backdraft damper and bird screen
    • Steel baked black enamel finish
  • 636 is rated 4.5 out of 5 by 4.
    Rated 4 out of 5 by from As desribed Not the sexiest thing to write a review about but it does the job and seems well made. I have it on my roof and, so far so good.
    Date published: 2016-11-02
    Rated 5 out of 5 by from As a remodeling contractor we use these all the time to fix peoples exhaust fans which have previously been dumping into the attic causing, mold , insulation damage, wood rot, etc. Its an inexpensive fix that works great.
    Date published: 2015-01-22
    Rated 5 out of 5 by from Just Right Could not find what I needed in local stores. I should have started with your web site. It was just right. Right application and works like it should. Plus it looks great on my roof.
    Date published: 2013-07-31
    Rated 4 out of 5 by from Easy to install, works I installed this cap on the duct from a new exhaust fan in the master bath. The instructions were clear and easy to follow. There are no leaks in the roof and the vent works. I am happy. I plan to use the larger version of this on the new kitchen exhaust.
    Date published: 2008-11-14
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  • Can the 636 be used as a side wall termination?

    Asked by: Steeve
    Thank you for your question on the model 636 roof cap. The 636 is designed for roof mounting only. We would not recommend trying to use it on a wall.
    Answered by: BroanCustomerService
    Date published: 2014-05-23

    NFA

    What is the net free area of this vent in inches?
    Asked by: Anonymous
    Thank you for your question on the Broan 636 roof Cap. I understand Technical support answered your question over the phone. If you have further questions please contact our Technical Support directly at 800-637-1453.
    Answered by: BroanCustomerService
    Date published: 2017-04-17

    Water Leaking

    Hello, We install these roof vents in our new construction properties. We have had several complaints about water leaking during storms. Could you please give me an explanation for this that I can pass onto our homeowners? It is my understanding that when we get sideways wind and rain, it is possible for that moisture to get into the roof vent and leak down into the home. Thanks! CA
    Asked by: Anonymous
    Thank you for your question on the model 636 roof cap. Yes, it is possible during strong storms or very windy days that rain can be blown into the roof or wall cap. If this unit has a back draft damper it would definitely help but weather is something that cannot be controlled, so it may not completely stop this from happening. If your customers are experiencing water leaking from the grille of their ventilation fan, this is normally due to cold duct work, improper installation, or a problem with the seal on a wall or roof vent. Insulated duct work can help solve the condensation problems and running the fan longer will ensure moisture is completely removed from the duct. Ductwork should slope down toward a wall vent to direct condensation out the exterior vent opening rather than back into the housing. For further questions, please contact Technical directly at 800-637-1453.
    Answered by: BroanCustomerService
    Date published: 2016-02-10

    how can I get installation instruction for a roof cap 636?

    Asked by: Anonymous
    Thank you for your question on the model 636 roof cap. You can download the installation instructions from our web site.
    Answered by: BroanCustomerService
    Date published: 2014-08-08

    How does the duct hose connect to the roof cap?

    I am using a flexible insulated air duct to connect the fan to the roof cap. Is there a 4 inch diameter neck on the bottom side of the 636 roof cap for the ducting to slip over and be secured to the unit? If so, how long is the neck? If there is only a hole with no neck, what sort of adapter would you recommend?
    Asked by: Anonymous
    Thank you for your question on the model 636 roof cap. The duct work does not actually attach to the 636 roof cap. The duct gets installed so that there is ¾” above the roofing material and the roof cap gets installed over the top of it. You can go to our web site and download a copy of the installation instructions.
    Answered by: BroanCustomerService
    Date published: 2014-07-21
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