Fire/Arson Investigations : Fire/Arson Investigations
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Re: home a/c flex duct
Posted by:
cda (IP Logged)
Date: October 26, 2006 02:42PM
I am being told that for houses it has to meet UL 181. Which can have a flame spread of 25 or less and smoke of 50 or less. The one installed in this house did have a flame spread of 25 or less.
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