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How do I measure the inside dimension of the plumbing vent pipe ?

April 26, 2017dimension measure pipe plumbing vent

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How do I measure the inside dimension of the plumbing vent pipe ?

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Most plumbing vent pipes are made of PVC plastic, cast iron or copper. Place a good steel ruler across the top of the plumbing vent pipe. Measure from the inside edge of one side directly across to the opposite inside edge. Note this measurement as the inside vent pipe diameter. All residential plumbing is a standard 2″, 3″, 4″, 5″ or 6″ inside diameter. Should you require a flange for a non-standard application, please contact us directly.