Roto MVD 400 Replacement Multipoint Door Lock Gearbox
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.
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.
Reversible latch for left or right handed doors
A full technical diagram is included in the image gallery.
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The only way to save replacing the whole mech, similar cost, but a lot less work and fuss.