05-12-2008, 05:56 PM
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Member
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Join Date: Mar 2007
Location: Philadelphia PA
Posts: 1,200
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Re: Insulation clearance to direct vent chimney
http://www.eccohtg.com/links/Product...%20-%204-5.pdf
On page 5 under Attic Radiation Shield, a one inch clearance is mentioned.
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