UNION "Monarch" case only operated by euro profile cylinder (supplied separately); case size 50mm; 8mm follower; satin chrome forend finish; deadbolt is locked or unlocked from either side using euro profile double cylinder. Reversible latchbolt withdrawn by lever handle or by key from either side. For 3-point locking end units bolts thrown by lifting handle and withdrawn by downward movement of the handle.End unit bolts must be thrown to enable centre deadbolts to be thrown.