Standpipe for the Clothes Washer

The standpipe for the clothes washer must be trapped. The standpipe height should be at least 18 inches (457 mm) and no more than 42 inches above the trap weir.
The standpipe for the clothes washer must be trapped. The standpipe height should be at least 18 inches (457 mm) and no more than 42 inches above the trap weir.

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