GU New Style Door Lock Gearbox Centre Case Replacement – 45mm Backset

A replacement centre case gearbox for the GU New Style 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: 45mm 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.
• The bar that goes through the lock must be one solid bar and not split in two.

A full technical diagram is included in the image gallery.