US lawMinnesotaRegulationsDEPARTMENT OF AGRICULTUREChapter 1545 — CHAPTER 1545, MEAT, FISH, AND POULTRY INDUSTRY1545.1160Minn. R. 1545.1160FLOOR DRAINAGE LINESYear: 2026Length: 35 wordsOfficial source Floor drainage lines shall be of metal and at least four inches in diameter and open into main drains of at least six inches in diameter and shall be properly vented to the outside air.PreviousMinn. R. 1545.1150NextMinn. R. 1545.1170