Euro Profile Mortice Locks The Lockwood Optimum Mortice Lock is easy to install and has field selectable handing. There are different models available for sliding, hinged and bi-fold door applications. Lockwood Optimum Hinged Door Multi-Point Mortice Locks30mm and 40mm backset variants available. Lockwood Optimum Hinged Door Roller Bolt Mortice Locks40mm and 50mm backset variants available. Lockwood Optimum Sliding Door Mortice Locks30mm and 40mm backset variants available. Lockwood Pinnacle Bi-Fold Mortice Lock25mm and 30mm backset variants available. Lockwood Residential Mortice LocksReversible brass latch bolt.