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    scotty396 Posts: 32, Reputation: 1
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    #1

    Jan 28, 2012, 08:21 PM
    Hvac ducts
    I have square galvanized dust work in my crawl space. And I am wondering, there are some holes in it and is not insulated. So, should I replace it with round insulated duct, replace the parts with holes in them and then put insulation on it or do they even need insulation? I live in northern Missouri where the winters can be long and summers can be long.

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