Can be used in commercial or residential applications which require supply valves and waste drain recessed into the wall. Box made of high impact high impact polystyrene. Versatile design allows for right, left, or center drain and bottom or top mount valves. "Lock and Load" valve mounting system for quick and easy positioning. Single lever valve mounting hub locks into position in seconds. Easily installed and removed test cap that does not fall into drain. 2 in drain opening fits PVC or ABS schedule 40 DWV pipe. 1/4 turn brass ball valve - PEX. 4 support brackets included for mounting. Snap-on faceplate frame accommodates up to 1 in drywall.