Sliding Bathroom Mortice Hookbolt - G8055This sliding bathroom mortice hookbolt can be operated by a turn from either side on a 5mm spindle. Made in the UK by Guardian Locks, this lock is available in various sizes and in many finishes. Typically used on sliding bathroom doors, where you can lock from the inside and then gain emergency release from the outside if required. SIZES AS FOLLOWS: Lockcase Backset 76mm 57mm The backset is the distance from the edge of the door to the centre of the