Water Tight Dual Drain Washing Machine Outlet Box, 1 Piece Construction With Raised Drip Guard Which Contains & Directs Leaks Down The Drain, Various Valve Mounting Options Allow Dual Drain, Right Drain Only, Left Drain Only Utilizing Bottom Or Top Mounted Valves, Box Can Be Inverted For A Center Drain, Back Of The Box Rests Against The Back Sheetrock Wall For Sturdy Installation, Side Of The Box Is Flat For Secure Mounting To The Stud, Extended Mounting Flanges That Span The Stud Bay Are Provided.