5 Lever Horizontal Mortice Lock - G5011This 5 lever horizontal mortice lock can be operated by a lever handle from either side and the deadbolt is operated by key from either side. Made in the UK by Guardian Locks. Typically used on external doors or doors which require a high level of security. Please note that this 5 lever locks meets the British Insurance Standards. SIZES AS FOLLOWS: Lockcase Backset Centres 127mm 45mm 57mm The backset is the distance from the edge of the door to the