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When a vent is less than 10 feet high, the vent should be at least as large as the flue collar outlet.b) Vents for draft hoods or flue collars 12 inches in diameter or less should NOT be reduced more than one pipe size.
View sammy37's Album. I wouldnt use pvc for the dryer vent, use the 4 round metal pipe. As far as the length, 36 feet is going to be a long stretch for that thing, especially adding the extra fittings that you want. Try to find another route that isnt as long.