PICK RESISTANT - The locks incorporate special pins within the mechanism giving resistance against picking.

 INTERNALLY LOCKABLE - For added security the lock handle is lockable from the inside. When leaving your house unoccupied the handle can be locked by the key before closing the door, giving security against forced entry by breaking glass and releasing the lock.

 HACKSAW RESISTANT - The main locking bolt has anti-cutting properties when resist attempts of forced entry by hacksaw or padsaw.

 BS3621 - These locks are certified to the rigorous standards of testing for Thief Resistance as laid down by British Standards.

 ANTI-TWIST CYLINDER - Three mounting lugs brace the cylinder in position in the door and prevents forced attack by physically twisting the cylinder mechanism out of the door.

Chubb 4L67 High Security Brass Rim Deadlock

Tested and certified to BS3621: 1980 the Chubb 4L67 has a backset of 60mm and is designed for use on inward opening doors. Incorporating a slam action square hardened steel bolt which automatically deadlocks. A 10 disc Ava mechanism allows for 50,000 key variations to eliminate opening by manipulation or false keys. The outer cylinder and lock case are protected from drill attack by hardened steel plates and pins, whilst the specially designed cylinder will restrict torque attack. As an added security feature the internal knob can be locked which is a particular benefit if fitted to a glazed door. Supplied with 2 keys