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  #51  
Old 01-13-2018, 08:40 PM
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Half-Inch Stud Half-Inch Stud is offline
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Join Date: Jul 2000
Location: BlueBell, PA or AL U.S.A.
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Every Runner has a transition into the Plenum. Well, the ceiling transition is crap because the turn radius allow detanced flow that will pick the runner flow.

Increase the turn radius for great high-speed flow.