1 x Replacement Securistyle The handle screw hole to screw hole dimension is 43mm. We have designed this as a genuine match replacement & can be exchanged by removing the shootbolt arms from each end of the old drive gearbox and fitting to the new one in the same way. This gearbox does not include the top cover-plate however you simply need to use the exsisting one which will fit as before. Face 108mm x 15mm; Backset 23mm; Body Height 90mm; Body Depth 31mm, Manufacturer: UPVCSTORE