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  1. #1
    Join Date
    Apr 2007
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    Hmm Fire protection, auto duct shut off

    One contractor says we will need to install automatic closing, heat activated, duct shut offs for fire protection. All of the other contractors did not mention it.

    We are planning to condition a lower unit with a roof top unit. This is a remodel and upgrade from evaporative cooling to AC. The ducts will pass through a chase which is covered with 5/8”drywall on the inside.

    project in Arizona
    Last edited by pines; 05-18-2007 at 01:05 AM. Reason: additional info

  2. #2
    Join Date
    Dec 2001
    Southern Tier, NY
    Post Likes
    it's called .... a Fire Damper

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