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  1. jwm8778

    Perforated Duct Hole Sizing/Spacing

    I am attempting to size/space perforations (holes spaced along the length) in an exposed duct to provide even air supply at each hole. I have seen another post on the subject, but do not follow exactly the procedure used. I have a 150' long 43" dia. duct with 15,000 cfm, and therefore a...

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