Door Eye And Doom

Door viewers, peepholes, wide-angle door eyes, and door chain fittings for wooden, metal, and composite doors — T21's door eye and doom collection covers the safety hardware that lets you identify a visitor before opening the door. A door viewer (peephole) fits into a 14mm to 16mm drilled hole through the door and provides a wide-angle view of whoever is standing outside — essential on any main entrance door without a sidelight window or intercom system. Door chains provide a secondary security layer — the door can be opened slightly to communicate with a visitor while the chain prevents it from opening fully until the chain is manually disengaged from inside. Delivered all over India, dispatched from Bengaluru.

What viewing angle should I look for in a door peephole for an Indian apartment door? A viewing angle of 160 degrees to 200 degrees gives a wide enough field to see a visitor clearly even when standing close to the door. Narrower angle peepholes (100 to 120 degrees) show only what is directly in front of the door and are inadequate for identifying visitors who are standing to the side. Wide-angle door viewers with 180 degree lenses are the standard specification for Indian apartment main doors.

What drill hole size does a standard door viewer require? Most standard door viewers and peepholes require a 14mm diameter hole drilled through the door. Some heavy-duty viewers for thick metal doors use a 16mm hole. Always confirm the required diameter for the specific viewer before drilling — the hole diameter cannot be reduced after drilling and a hole that is too large cannot be corrected without filling and redrilling.