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Duct Construction and Uses
Discussion in fabricating and use of products that move air including spiral pipe, duct board and typical sheet metal work.

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Old 02-15-2012, 06:47 AM
tnbndr tnbndr is offline
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I think he is trying to build a "Z" fitting or really back to back square throat square heel elbows to make his offset. These can be made as one piece but I don't know of any formula to calculate the dimensions. I would draw a picture and fill in the blanks and then cut my sheets with allowances for seams.
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Old 11-11-2012, 10:00 AM
vezfriend vezfriend is offline
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Smile field offset/square duct offset

a big tnx to you bro., I will try this given formula once more.
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