NuTone 1370M Framed Dunhill Collection Single Recessed Bath Cabinet, 31-Inch High, Maple Mounting: Recessed Overall Size: 21-Inch by 31-Inch, Wall Opening: 14-Inch by 18-Inch by 3 1/2-Inch Steel construction 2 adjustable polystyrene shelves Piano hinge and Reversible door for left or right hand opening