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Old 07-19-2010, 01:46 PM   #1
Full Fledged Farker
Join Date: 03-30-09
Location: Minnesota
Default Building reverse flow what size opening between firebox and chamber?

A friend of mine (welder) wants to build a reverseflow smoker. We currently have 2 tanks, each about 20" (or 22") in diameter. ONe is around 5' long, the other 3'. Plan was to use the smaller one as the firebox. I think I've read that the firebox should be ~30% of the Smoking chamber in size. But I'm not sure what size the opening should be? OR does it really matter much?

Thank in advance.
UDS, Large Green Egg, Weber Genisis, Weber Smokey Joe.
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Old 07-19-2010, 03:44 PM   #2
Willie's BBQ
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Join Date: 03-16-10
Location: tampa,fl

i have a 120 gallon tank which is about 5 1/2 feet long. i used round steel for the fire box. 24inch diameter, 24 inches long, the cut out to main chamber is shaped like a football. dimensions are about 6''x 14" i think. hope this helps
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