Designed for simple yet versatile installation, the Water-Tite Econo Box Center-Drain Washing Machine Outlet Box is thoughtfully constructed to reduce labor for contractors and homeowners. This outlet box comes with pre-installed quarter-turn brass valves and features a box design that can be inverted for top-mount valves with a center drain. Integrated hammer arresters inside the valves absorb sudden pressure changes to reduce stress on the plumbing system, providing continuous and maintenance-free protection against water hammer. The EZ Out test cap is raised for quick removal, and the knockouts are oversized, so they won't fall down the drain. And thanks to a single-piece construction that includes a raised drip guard, any potential hose or valve leaks will be contained and sent directly down the drain instead of onto the laundry room wall and floor. Featuring a one-piece design, this washing machine outlet box can be installed more quickly than separate drain and valve boxes. It comes with a snap-on faceplate that measures 10-3/16 inches wide by 8-13/16 inches high and is interchangeable with DU-All outlet-box faceplates. Dimensions: 10.1875 Inch Frame Width, 8.8125 Inch Frame Height, 7.5625 Inch Frame Opening Width, 5.625 Inch Frame Opening Height, 8.25 Inch Rough-in Box Width, 3.75 Inch Rough-in Box Depth, 6.125 Inch Rough-in Box Height, Supply Connection Size: 1/2 Inch, Outlet Connection Size: 3/4 Inch, Supply Connection Type: Sweat, Outlet Connection Type: Compression