Description:Acrylic lens, not easy to break, comparable to the glass lens. The solid brass door viewer has a 220 degrees wide viewing angle. It provides a clear view with an extraordinary wide-angle coverage. It covers the entire area from the porch ceiling to the door mat, extending to both sides of the door across the street. You can find the package without opening the door. It's easy to see anyone outside from head to toe.Features1. It can be installed in the door hole with a diameter of 28mm-36mm and a thickness of 40mm-55mm.2. Perfect for home, office, hotel, and front door where you need to see and monitor who is outside when the doorbell rings.3. Notice: Please keep the threaded rod upward during installation to prevent the lens from falling off. Specification:Material: BrassFinish: Brass FinishViewing Angle: 220-degreeMounting Hole Diameter: 28-36mm/ 1.1-1.42inchTotal Length: 53mm/ 2.09inchMax. Outer Diameter: 38mm/ 1.5inchApplicable Door Thickness: 40mm-55mm/ 1.57-2.17inchPackage Content:1 x Door Peephole
