Patented one-piece design speeds installation versus separate drain and valve boxes. Back of box rests against the back sheetrock wall for sturdy installation. Solid one-piece construction with raised drip guard contains and directs leaks down the drain. Forward mounted valves give easy access to homeowners for on/off operation. Various valve mounting options allow dual drain, right drain only or left drain only. Can be inverted for top mount and center drain option. Flat box side for secure mounting to the stud. EZ Out Test Caps are raised for easy removal and KO's are oversized so they won't fall down drain. Textured, snap-on frame, with hot and cold supply designations embossed on front, accommodates up to 1" drywall for a clean finish. Rough opening: 8 ¼" W x 6 1/8"H x 3 ¾" D. Faceplate dimension: 10 3/16" W x 8 13/16" H.  Extended mounting flange provided.