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dryer vent code virginia

Dryer exhaust ductsshall conform to the requirements of Sections M1502.4.1 through M1502.4.6. M1502.4.1 Material and Size Exhaust ducts shall have a smooth interior finish and be constructed of metal having a minimum thickness of 0.0157 inches (0.3950 mm) (No. 28 gage). Theductshall be 4 inches (102 mm) nominal in diameter.

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