Wide Viewing Angle: The 16mm diameter lens offers a wide viewing angle, allowing you to see visitors clearly and enhancing your security. Privacy cover, door hole plate cover. Easy Installation: Designed for simple installation, this door viewer fits doors of various thicknesses, making it practical and convenient for any home. Peephole cover plate, doorknob filler plate. Wide Viewing Angle: With a 16mm diameter, this door viewer offers a wider and clearer view, allowing you to see visitors with ease. Door hole protector, door hole cover. Wide Angle Lens: The 16mm diameter lens provides a wide-angle view, allowing you to see visitors clearly and enhancing your security. Privacy peephole cover, viewer privacy cover. Privacy Cover: The integrated cover prevents prying eyes, ensuring your privacy and giving you peace of mind. revolving door cover, peephole cover