C-Series Cylinder Locks UNION C-Series Cylinder lock cases offer robust construction and high security locking with the advantages of cylinder locks. 3C10 - Euro Profile Cylinder Mortice Deadlock (case only)Heavy duty euro profile cylinder lockcase For timber door… 3C14 - Euro Profile Cylinder Mortice Deadlock (case only)Heavy duty euro profile cylinder lockcase For timber door… 3C20 - Euro Profile Cylinder Mortice Sashlock (case only)For timber door hinged on left or right Not suitable for …