US lawOregonRegulationsChapter 918 — Department of Consumer and Business ServicesDivision 770 — PLUMBING PRODUCT APPROVALS918-770-0330OAR 918-770-0330OAR 918-770-0330. Exempt Plumbing ProductsLast amended: 2000Length: 24 wordsOfficial source The following plumbing products are exempt from product approval by the board: (1) Lead roof flashings; (2) Pipe hanger hooks; and (3) Nail plates.PreviousOAR 918-770-0320