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  1. 01-07-2009, 11:40 PM #1
    thehoodguy
    thehoodguy is offline Regular Guest
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    Fire dampers in Exhaust Duct

    Just wondering if anyone remembers when the code changed dissallowing fire dampers in Non UL listed ducts and duct systems.
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  2. 04-02-2009, 09:50 AM #2
    Sparkplug101's Avatar
    Sparkplug101
    Sparkplug101 is offline Professional Member
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    Regina SK Canada
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    It was in the atter part of the 90's. fire hazard as the dampers would collect grease and not close
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