Door Scope DS1000 Charcoal Door Scope Viewer - 168 degree wide angle view Viewable from up to 7 feet inside your home. Image Dispersion System completely Blocks peeping from outside. Uses an SCR-Filter to get an image at night time in minimum light conditions Pressure Sealed Prism set prevents permeating of moisture and dust Adjustable for 1 1/8" to 2" thick doors, For use in fire rated doors up to 20 Minutes Label Made from ABS Plastic. Made in Korea