US lawWashingtonRegulationsTitle 296 — LABOR AND INDUSTRIES, DEPARTMENT OFChapter 296-150C — COMMERCIAL COACHES296-150C-1550WAC 296-150C-1550WAC 296-150C-1550. Drainage—Cap or plugLast amended: 1996Year: 2026Length: 18 wordsOfficial source Drain outlets must be equipped with a watertight cap or plug that is permanently attached to the vehicle.PreviousWAC 296-150C-1545NextWAC 296-150C-1560