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. Fullex XL Gearbox 35mm. Fullex XL Door Lock Gearbox Centre Case 35mm Single Spindle Information.
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In most cases, lock issues stem from a faulty gearbox, and replacing it is a straightforward process requiring only a few screws. Fuhr Door Lock Gearbox Centre Lock Case – 35mm Single Spindle Details.
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Fullex XL genuine gearbox lock with a 35mm backset and a doube spindle. Backset: 35mm(face of lock back to the centre of the keyhole). Case Width:Backset + 15mm. Operation: Lift Lever or Double Spindle Nightlatch.
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