Union J2200SC25 Strongbolt 5 Lever Mortice Sash Lock 68mm Satin Chrome

Finish: Satin Chrome
Case Size: 68mm x 109.6mm (2.5in)
Backset: 45mm This is the measurement from the edge of the door to the centre of the keyhole.
Centre: 57mm This is the measurement from the centre of the follower, which operates the handles, to the centre of the keyhole. In the UK this is commonly 57mm.
Boxed