Union 2134E BS3621 Mortice DeadlockThe Union 2134E Mortice Deadlock is a British Standard High Security Deadlock that meets the BS3621 standard. Available keyed differ with 3 x keys per lock as standard, or keyed alike for an additional cost. Please note, if ordering a set of keyed alike locks, you will only receive 3 x keys with the set as standard. You can order additional keys with your lock here if required. Choose from chrome or brass finish, and case sizes of 67mm or 80mm.