PM562 Hi-Security BS 5 Lever Mortice Deadlock 81mm 3in Polished Brass
The Yale Locks YALPM562PB30 PM562 Hi-Security BS 5 Lever Mortice Dead Lock 68mm 3 inch comes in the following:Finish: Polished BrassCase Size: 81mm x 89mm (3 inch)Backset: 57mm This is the measurement from the edge of the door to the centre of the keyhole.