Oatey® Quadtro® Washing Machine Outlet Boxes are made for commercial/residential applications which require supply valves and waste drain recessed into the wall. The proprietary lock and load valves enable left, right/center positioning of the drain pipe. This easy-to-install box includes all necessary support brackets to mount the water supply valves from the top/bottom. Oatey® products have earned the trust of plumbing professionals for over 100 years.