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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.
Performance 50 Gal. Tall 6 Year 42,000 BTU Power Vent Natural Gas Water Heater is rated 4.2 out of 5 by 414. Rated 3 out of 5 by Steve from It should be known that the vent pipe cannot be cellular core pvc. Home Depot does not sell solid... It should be known that the vent pipe cannot be cellular core pvc.