For Doors 1 3/8″ to 2″ thick (your standard size) You can easily install it in 5 minutes Clearly see who is at your door from the safety of your home Replaces your standard peephole 290° Degree Wide Angle Door Viewer for Crime Prevention – High Security Installation At convenient high, mark a circle of 5/8 inch at your door To drill hole use a 5/8 inch wood drill, open hole carefully without drilling the door all the way through, then finish opening the hole from the other side. Once the hole is clear, unscrew door viewer, insert the front section into the hole from out side of the door, then insert rear section from inside, and screw both sections together

Product Features

• The Cyclops door viewer is a high technology product made with four precision glass lenses to assure a clear 290° degree full view. Submarine periscope technology, optic system, wide angle lens and long range. The lenses are made with an aluminum structure which does not rust and is resistant to the discoloration caused by outside weather. Weather resistant and color fading resitant.