Du All Dual Drain Washing Machine Outlet Box With 2 Copper Connection Valve Quarter Turn Patented 1 Piece Design Speeds Installation Verse Separate Drain Valve Boxes Depth Of The Box Rest Against The Back Sheetrock Wall For Sturdy Installation Side Of The Box Has A Flat Side For Secure Mounting To Wall Frame Is Interchangeable With Center Drain Washing Machine Outlet Boxes Specifications . Weight 2 lbs