5 Lever British Standard Sashlocks

 This type of lock is typically found on External door to meet current insurance requirements.  All 5 Lever British Standard locks are required to meet BS3621.  British Police recommend 5 Lever British Standard Locks on all external doors.  5 Lever British standard deadlocks are available in Masterkeyed and Keyed alike versions.  5 Lever British Standard Deadlocks available from Asec, Chubb, ERA, Legge, Securefast and Union in various colours and sizes.