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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.
For the vent pipe to be properly installed, it must be either 10 feet horizontally away from an opening or two feet above the opening. This keeps high concentrations of Radon gas from re-entering the home. They did not use a proper electrician, or get a permit (which is required in Appleton).