Specification:This highest standards quality glass lens door viewer with 200 degree offers a very clear view with an super wide angle .You can easily view the visit outside ,It will definitely avoid the unexpected visitor and  offer security and safety you and your family Description: 1. Fit for 25-42mm thickness of doors. 2. Made of high quality zinc alloy material with plating process, corrosion resistant, durable. 3. Adopts high technology resin lenses to ensure clearer view. 4. 200 degree wider angle than the conventional door viewer. 5. With a lid to cover the lenses by manually rotating the lid and well protect your home privacy. 6. Easy to install, different color for you to choose.Package Includes: 1 x Door Viewer One door viewer in one plastic bag ,and then in one small box ,12pcs in inner box ,500/600pcs in one carton   Wenzhou Jifu Hardware Co., Ltd. The company annual output value of up to 80,000,000 yuan, and growing steadily by 10% per year. At present, the monthly output: 1 million 150 thousand / month, door viewer: 500 thousand / month, handle: 120 thousand / month, there are two production lines, up to 250 thousand units /month, the rest hardware accessories up to 400 thousand / month.