The wide angle door viewer is made of high quality copper material with plating process, corrosion resistant, more solid and durable The home security door viewer adopts optical glass lenses of high technology to ensure a clearer view The door viewer has a 220 degree wider angle than the conventional door viewer The door viewer with a 1.5mm thick cover, covers the lenses by manually rotating the cover when not in use The home security door viewer is suitable for door thickness: 35mm-60mm, tube diameter: about 22mm, suitable for to hole diameter: 22mm to 25mm This high-tech optical glass door viewer offers a 220 degree wider angle and a super clear view of the carries. A good home security system helps to avoid home invasion or unexpected visitors effectively. Replace the old one to reduce the potential danger to yourself and your families, especially the child and the elder. Features: Made of high quality copper with plating process, corrosion resistant, more solid and durable. Adopts high-tech optical glass lens to ensure a clearer view.220 degree wider angle than conventional door viewer.With 1.5mm thick cover, cover the lenses by manually rotating the cover to protect your privacy well.Specifications: Condition: 100% Brand New Material: Copper + Optical Glass Color: Brushed Silver, Red Bronze, Bronze, Gold (optional) Tube Diameter: 22mm/0.87inch Suitable for Hole Diameter: Approx. 22mm~25mm/0.87~0.98inch Angle: 220 Weight: approx. 82g Package included: 1 x Door Viewer How to measure: Please join in first the old door viewer and measure the size of the hole; if there is no door viewer, please measure the thickness of the door. How to install: