Oatey QUADTRO washing machine outlet boxes can be used in commercial or residential applications which require supply valves and waste drain recessed into the wall. Available water hammer arrestor option provides water pressure shock arrestors required for installation on supply lines to quick closing valves.Features: 2" drain opening fits PVC or ABS Schedule 40 DWV pipeEasy to remove knockout, Patent Pending Hammer ValvesSnap-on Faceplate Frame accommodates up to 1" drywallBox made of high impact polystyreneTop or Bottom Valve Mount4 support brackets included for mountingWith hammer arrestorsSpecifications: Box Material: PlasticSupply Box Connection Type: CopperDrain Opening: 2"Height: 11-3/4"Width: 10-1/2"Box Dimensions: 8-3/4"W x 7-1/2"H x 3-5/8"DFaceplate Dimensions: 11-3/4"W x 10-1/8"HDrain Connection: 2"Material: PolystyreneType: 1/4 Turn