With a strong chain you are able to hold the door in a slightly open position to help protect against a forced attack. Easy to use, simple to install and most importantly secure, you cant ask for much more when it comes to additional front door security.
Heavy-duty, surface fitted accessory which is simple to install
Helps identify caller before the door is fully released
Suitable for use on internal doors 850-1100 mm wide or external doors 950 mm wide