ABT Gibbons / ST Helens Replacement Gearbox 31mm Without Snib

A replacement centre case gearbox for the ABT Gibbons and ST Helens 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.

ABT Gibbons Centre Case Information

• Important measurements: 31mm Backset / 48mm 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 and lever / pad operation

• No Snib

• No cover plate

Technical

A full technical diagram is included in the image gallery.