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Old 08-25-2013, 11:30 PM   #8
retired trucker
is One Chatty Farker
 
Join Date: 09-28-11
Location: Dallas, Georgia
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I think the old adage of "less is more" does not apply in this case. I would go 1/2 inch or insulated 1/4.

Blessings,
Omar
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Webber 22 1/2 OTG Gold, UDS, rusted out chimney, Red Lavatools Thermowand, Maverick ET 732, 1950 model wife. Walking cane to help me get around.
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