StrongBOLT 22EU EUS-SS-3.0 Euro Sashlock Stainless Steel 81mm 3in
Forend: Stainless Steel. Case Size: 81mm x 110mm (3.0in). Backset: 57mm. This is the measurement from the edge of the door to the centre of the keyhole. Centre: 47.5mm. This is the measurement from the centre of the follower, which operates the handles, to the centre of the keyhole.