Broan 636 Black Enamel 3" or 4" Round Duct Steel Roof Cap with Backdraft Damper

- Item #: BCI417815

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Black Enamel
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6212 In Stock
Ships Tomorrow, by December 19th


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Questions about Broan 636?

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  • Can this be used in place of standard roof vents (replace existing ones)? I'm trying to prevent backflow due to an attic fan, but would like it to work naturally (exhaust out) if the attic fan is not on.

    A. Yes the Broan 636 can be used to as standard roof vents and it is meant to prevent the back flow of air.
  • Can it be used with a range exhuast?

    A. The Broan 636 is would work just fine if you were able to duct it down to 4" for your range.
  • Does the 636 come with a 4" duct collar connector?

    A. Yes, the Broan 636 can connect to a 3" or 4" duct.
  • Can it be used with a clothes dryer?

    A. The Broan 636 can be used with a clothes dryer. However, it has a bird screen that will catch bits from the dryer exhaust and will clog unless you either clean it occasionally or clip out the bird screen.
  • what is CRCQ stand for on the roof cap vents?

    A. The CRCQ on the Broan 636 stands for Cold-Rolled Commercial Quality.

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