Broan 643 Aluminum 8" Round Duct Aluminum Wall Cap with Damper

- Item #: BCI417821

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Questions about Broan 643?

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  • Does it have a bug screen? And how does it attach to the wall / side of house?

    A. The Broan 643 has a damper. It goes directly into the venting pipe coming through the wall.
  • Is the Broan 643 for use for exterior brick wall with 8" dia. vent for a gas range hood vent for exterior vent cap?

    A. The Broan 643 is compatible with brick wall installations.
  • Is the damper spring-loaded?

    A. The Broan 643 has a gravity damper that is not spring-loaded.

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