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Proposed Changes by Code Provision—National Plumbing Code 2020

National Plumbing Code 2020 (Proposed changes to 1 provision)

Division B

(Proposed changes to 1 provision)

Part 2 - Plumbing Systems

(Proposed changes to 1 provision)

2.4.9.2. Serving Water Closets

1390 - Size of Drainage Pipes Serving Water Closets

Date modified:: 2023-02-23