Genuine Ingenious Replacement 35-92/62 Latch & Hook – Dual Spindle Lock Box Centre Case

The Genuine Ingenious Replacement 35-92/62 Latch & Hook Dual Spindle Lock Box Centre Case is a precision-engineered multipoint door lock gearbox designed to restore the smooth and secure operation of your door without the need to replace the full strip. Manufactured by Ingenious, this centre case is built to exacting standards and is ideal for repairing failing or worn multipoint locking systems found on uPVC, composite and timber doors that operate via a lift lever mechanism.

This gearbox features a Latch and Hook locking configuration, providing excellent door compression and enhanced security when the handle is lifted. Designed to work with a Euro Cylinder Lock, this centre case allows you to retain or upgrade your cylinder as needed while restoring full locking performance. The 35mm backset measurement ensures correct alignment within the door profile, while the 92/62mm (PZ) centres make this lock suitable for doors that utilise a dual spindle door handle arrangement, commonly found on split spindle night latch and lever systems.

The fixing points are critical for compatibility, and this unit includes a 110mm measurement from the top fixing to the centre fixing and 108mm from the bottom fixing to the centre fixing, with an overall case length of 228mm, allowing for straightforward identification and replacement of like-for-like centre cases in existing mechanisms. The dual spindle allows independent operation of internal and external handles, improving both security and functionality.

Over time, multipoint door lock gearboxes can become stiff or fail due to lack of maintenance. To keep your new Ingenious centre case operating smoothly, we recommend a periodic lubrication of the internal gearbox using GT85, which helps prolong the lifespan of the locking mechanism and maintain effortless lift lever operation.

Whilst upgrading your multipoint door lock, it’s the perfect opportunity to improve both security and appearance. Consider replacing your existing handles by browsing our Door Handles section for a fresh, modern look, and upgrade your existing cylinder to a high security 3 star rated Euro Cylinder from our door cylinders range for enhanced protection against snapping and forced entry.

If you are unsure whether this is the correct replacement for your door, or require more information on how to measure a multipoint door lock gearbox correctly, please see our helpful guide here:
https://www.mbdiy.co.uk/blog/how-to/how-to-replace-a-multipoint-door-lock-gearbox/

Alternatively, contact our sales team for professional advice who will be happy to help identify the correct part for your door.