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Home improvement replacement that restores secure locking on uPVC doors with a robust centre-case gearbox. Confident DIYers and installers will appreciate a straightforward, durable swap that keeps doors operating smoothly. Is UPVCSTORE GU Old Style Door Lock Centre Case Gearbox the right fit for your existing lock strip?
⚡ At a Glance
- • Locking Precision: Smooth engagement with standard uPVC handle action designed for centre-case operation
- • Best for: DIYers and locksmiths replacing centre-case gearboxes on 35mm backset uPVC doors
- • Not ideal for: Users who cannot arrange professional fitting, since fitting is advised
Universal non-handed centre case matches a 35mm backset and can attach to existing locking strips. All-metal internal construction without plastic parts and a technical diagram are provided for fitters.
Secure, wear-resistant operation – With all-metal gearbox construction
Internal mechanism uses metal components rather than plastic, reducing the risk of wear and mechanical failure over time.
Reliable locking action holds up under frequent use, so doors remain secure and functional for longer without frequent replacements.
Straightforward replacement – Thanks to centre case re-attachable design
Centre case can be re-attached to an existing locking strip, allowing the gearbox to slot into the original assembly during repair.
Saves time when swapping parts and avoids replacing the entire locking strip, making repairs quicker for both DIYers and professionals.
Versatile fit for most uPVC doors – With universal non-handed configuration
Non-handed design fits left- and right-hung doors and is specified for a 92pz 35mm backset to match common uPVC door geometry.
Eliminates the need to source separate left- or right-handed units and matches standard handle and spindle arrangements.
✨ The 4 Key Reasons for UPVCSTORE GU Old Style Door Lock Centre Case Gearbox
- Universal Non-Handed Design – Fits left- and right-hung doors with no modification required
- Centre Case Re-Attachable – Works with existing locking strips to simplify replacement
- 92pz 35mm Backset Compatibility – Aligns with common uPVC door measurements for accurate handle placement
- Installer Diagram Included – Technical diagram in the images supports correct fitting and alignment
📋 Technical Details at a Glance
- Category: Home Improvement
- Brand: UPVCSTORE
- Product Type: GU Old Style Door Lock Centre Case Gearbox
- Compatibility (Backset): 92pz 35mm backset
- Handing: Universal non-handed (fits left and right handed doors)
❓ Frequently Asked Questions
Q: Is the gearbox handed or universal?
A: The centre-case gearbox is universal non-handed and fits both left- and right-hung uPVC doors.
Q: Can the centre case be fitted to an existing locking strip?
A: Yes, the centre case can be re-attached to the old locking strip to simplify replacement.
Q: Do I need a professional to fit it?
A: Professional fitting is advised, although some reviewers report successful DIY installation when following the technical diagram.
🏆 Our Verdict
Suitable for DIYers and professional fitters who need a durable centre-case replacement for standard 35mm backset uPVC doors. Metal-only internals and the ability to re-attach to existing locking strips make for a long-lasting, easy-to-integrate repair. Recommended where a dependable, permanent fix is preferred over a temporary patch.
