A replacement centre case gearbox for the Fullex XL Dual Spindle 35mm multipoint door lock mechanism. If you’re having problems with your door lock, the gearbox is almost always the problem and replacing it with a Fullex XL Gearbox is as simple as removing a few screws. Important measurements: 35mm Backset / 92mm PZ Centres This is the mechanism inside the door that is operated by the handle. Most likely to be the problem when a lock fails. Reversible latch for left or right-handed doors Dual spindle – for lever/lever operation
