Jensen 407ADJ Basic Styleline Recessed Molded Medicine Cabinet Mounting type: recessed with wall opening dimensions measuring 14-Inch by 18-Inch by 2-1/2-Inch Overall size: 16-Inch by 20-Inch Easy to clean, one-piece, injection-molded polystyrene construction 3 adjustable, polystyrene shelves Premium float glass mirror with glass thickness: 3/32-Inch