Door Viewer: Our Bright Solid Brass, Door Viewers were designed with convenience and security in mind. Enhanced viewing area gives you a virtually complete look from top to bottom and side to side. Glass, polished & lacquered brass. Measures 2 1/16 long x 1 1/8 dia. door. Fits door 1 3/8 in. to 2 1/16 inch door thickness, 160 degree view.