GU genuine gearbox to suit new style GU passive (slave) locks only, not compatible with old style versions.

New style GU locks can be differentiated from their old-style equivalents by the shape at the top of the gearbox. Old-style locks have the top corner removed, whereas new versions feature a vertical groove to help with bolts for handles. The two gearboxes are not compatible, so a new-style gearbox will not fit on an old-style multipoint lock. 

This version is designed for slave doors and does not feature a latch or deadbolt.

GU multipoint lock gearboxes measure 191mm high (excluding the fixing lugs) by the backset + 16mm wide. They are fixed to their faceplates with 3 screws. The distance from the top to the middle screw is 108mm, while the middle screw to the bottom screw is 92mm.

Always allow 3mm when measuring your backset If the faceplate is not attached to the gearbox.

We stock a range of associated products for GU gearboxes, including keeps, spindles, handles.

Operation: Lift Lever – Lift handle engages locking points and key is then turned to deadlock the mechanism

To lock the door

1. Lift the handle up to engage the vertical locking points.

3. Lock the system by turning the key (on some brands, the deadbolt will be thrown by lifting the handle).

To unlock the door

1. Unlock the system by turning the key.

2. Push the handle downwards to disengage the locking points.