The Union 2234E 5 Lever British Standard Mortice sashlock is ideal for timber doors hinged on the left or right and the keys are suitable for doors up to 54mm thick. The 20mm deadbolt is locked or unlocked by the key from either side, for secure positive deadlocking and additional resistance against attack. This 2234E features an anti-pick, anti-saw and anti-drill security, Chamfered bolt design that increases the performance of the lock under side load testing. The chamfer of the bolt also makes drilling attack more difficult, Supplied with covered escutcheon to match forend. This lock has an unique pierced casing to accept bolt through door furniture. The 2234E series locks are recommended by insurance companies, kitemarked to BS3621: 2007 (British Standard). They are also covered by a 15 Year guarantee. Deadbolt Brass, with hardened steel rollersRebate Kit 2964 (13mm, 19mm or 25mm)Supplied with 3 steel nickel plated keys The security level of mortice deadlocks or sashlocks ranges from 2-5 levers. The higher the number of levers the more secure the lock is