uxcell Metal Wide Angle 200 Degree Tube Door Viewer Peephole 16mm Dia Copper Tone Size: 46 x 29mm / 1.8" x 1.1" (L*D); Fit Door Thickness:35-60mm/1.4"-2.4" High quality optical lens with 200-degree visual angel offers a clear view angle. You can easily view the entire surrounding area from the top of the head to the feet of someone standing outside. It offers the highest quality security for you and your family. With the cover, visitors outside cannot see through the viewer into your home, offer the highest level of privacy for protection and safety.