A replacement centre case gearbox for the Roto MVD 400 multipoint door lock mechanism. If you're having problems with your door lock, the gearbox is almost always the problem and changing it is as simple as removing a few screws.
Information Important Measurements: 35mm Backset / 92pz Centres This is the mechanism inside the door that is operated by the handle. Most likely to be the problem when a lock fails.
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