2.5 inch - Case Length 2.5inch, Centre to Centre 57mm, Backset 44mm
3 inch - Case Length 3 inch , Centre to Centre 57mm, Backset 57mm
- Mortice Sash Lock which provides additional locking on internal doors.
- This lock has a key operated deadbolt and a handle operated latchbolt to hold the door in the closed position when not locked.
- For new doors you will also need to purchase a Lever Lock Door Handle.