DIN Standard Mortice Bathroom Lock With 60mm Backset & 78mm Centres, T/Turn Follower 5mm. 10yr Mechanical Guarantee. Conforms to BS EN 12209. Certifire Approved. Suitable for FD30/60 rated fire doors. Finish: Satin Stainless Steel. Category Of Use Grade 3. Please note, this lock has Radiused forend and faceplate