US lawWashingtonRegulationsTitle 296 — LABOR AND INDUSTRIES, DEPARTMENT OFChapter 296-62 — GENERAL OCCUPATIONAL HEALTH STANDARDS296-62-13635WAC 296-62-13635WAC 296-62-13635. Compatibility of systemsLast amended: 2019Year: 2026Length: 25 wordsOfficial source Make-up air systems must be designed and operated in such a manner that they will not interfere with the effectiveness of the exhaust air system.PreviousWAC 296-62-13630NextWAC 296-62-14533