Jensen 495 Basic Styleline Recessed Steel Medicine Cabinet, White Mounting type: recessed with wall opening dimensions measuring 17-1/4-Inch by 26-1/4-Inch by 3-1/2-Inch Overall size: 20-Inch by 30-Inch Rust-resistant, white baked-enamel interiors Easy to clean, one-piece, heavy-gauge drawn steel construction Mirror glass thickness: 1/8-Inch