The Oatey Quadtro Washing Machine Outlet Box is made for commercial or residential applications where supply valves and waste drains are recessed into the wall. Connects to PEX-B/F1807 supply line with crimp connection. The proprietary lock and load valves enable left, right or 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 or bottom.