--- product_id: 508290605 title: "GU Old Style 35mm uPVC Door Lock Centre Case Gearbox Single Spindle" brand: "upvcstore" price: "ΰΈΏ4750" currency: THB in_stock: true reviews_count: 13 category: "Upvcstore" url: https://www.desertcart.co.th/products/508290605-gu-old-style-35mm-upvc-door-lock-centre-case-gearbox store_origin: TH region: Thailand --- # Precise 35mm backset Universal non-handed fit Robust all-metal gearbox GU Old Style 35mm uPVC Door Lock Centre Case Gearbox Single Spindle **Brand:** upvcstore **Price:** ΰΈΏ4750 **Availability:** βœ… In Stock ## Summary > πŸ” Upgrade your door’s heart with precision and durability! ## Quick Answers - **What is this?** GU Old Style 35mm uPVC Door Lock Centre Case Gearbox Single Spindle by upvcstore - **How much does it cost?** ΰΈΏ4750 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.co.th](https://www.desertcart.co.th/products/508290605-gu-old-style-35mm-upvc-door-lock-centre-case-gearbox) ## Best For - upvcstore enthusiasts ## Why This Product - Trusted upvcstore brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - β€’ **Seamless Integration:** Centre case re-attaches perfectly to your existing locking strip for a smooth, hassle-free installation. - β€’ **Fits Every Door, Every Time:** Universal non-handed design works seamlessly on left or right-handed doors, eliminating guesswork and extra purchases. - β€’ **Built to Last, No Plastic Parts:** Durable all-metal gearbox ensures long-lasting performance without the fragility of plastic components. - β€’ **Effortless Upgrade, Cost-Effective:** Replace just the centre case gearbox instead of the entire multi-point lock, saving time and money. - β€’ **Precision Engineering for Smooth Operation:** 35mm backset guarantees compatibility and flawless handle operation, recommended for professional fitting. ## Overview The GU Old Style 35mm uPVC Door Lock Centre Case Gearbox is a universal, non-handed replacement mechanism designed for left or right-handed doors. Featuring a robust all-metal gearbox with a precise 35mm backset, it fits seamlessly into existing locking strips, offering a cost-effective alternative to full lock replacement. Ideal for professional installation, this polished, modern component ensures smooth, reliable door handle operation without plastic parts. ## Description Non-handed (Fits left and right handed doors) More cost effective than replacing the whole multi point lock Centre case can be re-attached to the old locking strip This is the mechanism inside the door that is operated by the handle Professional fitting is advised for this product Review: Perfect replacement - Perfect direct replacement for my broken gearbox. Easy to fit and works really well. Would highly recommend, but check it’s the right product before buying. Review: Just brilliant - Absolutely brilliant and fits like a glove thank you ## Features - Universal Non-handed (Fits left and right handed doors) - Centre case can be re-attached to the old locking strip - 92pz 35mm Backset - This is the mechanism inside the door that is operated by the handle - Professional fitting is advised for this product - Well built replacement gearbox no plastic parts - For technical diagram please see last image ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B0BT54TFQT | | Best Sellers Rank | 10,400 in DIY & Tools ( See Top 100 in DIY & Tools ) 5 in Lock Replacement Parts | | Brand | UPVCSTORE | | Country of Origin | United Kingdom | | Customer Reviews | 4.2 out of 5 stars 238 Reviews | | Finish | Polished | | Included Components | Key | | Item Dimensions | 22 x 6 x 2 centimetres | | Item dimensions L x W x H | 22 x 6 x 2 centimetres | | Lock Type | Mortise Lock | | Lock type | Mortise Lock | | Manufacturer | UPVCSTORE | | Material | Plastic | | Model Name | GU Old Style | | Model Number | GUOLD35 | | Number of Pieces | 1 | | Recommended Uses For Product | Residential Doors, Commercial Doors | | Recommended uses for product | Residential Doors, Commercial Doors | | Smart Home Compatibility | Not Smart Home Compatible | | Special Features | Heavy Duty Protection | | Special feature | Heavy Duty Protection | | Style | Modern | | Unit Count | 1.0 count | ## Images ![GU Old Style 35mm uPVC Door Lock Centre Case Gearbox Single Spindle - Image 1](https://m.media-amazon.com/images/I/611z2bjdGcL.jpg) ![GU Old Style 35mm uPVC Door Lock Centre Case Gearbox Single Spindle - Image 2](https://m.media-amazon.com/images/I/71Zprcy5L3L.jpg) ![GU Old Style 35mm uPVC Door Lock Centre Case Gearbox Single Spindle - Image 3](https://m.media-amazon.com/images/I/71Il7yVlQuL.jpg) ![GU Old Style 35mm uPVC Door Lock Centre Case Gearbox Single Spindle - Image 4](https://m.media-amazon.com/images/I/6167tOfEHxL.jpg) ![GU Old Style 35mm uPVC Door Lock Centre Case Gearbox Single Spindle - Image 5](https://m.media-amazon.com/images/I/71jWcOtzWTL.jpg) ## Customer Reviews ### ⭐⭐⭐⭐⭐ Perfect replacement *by T***M on 5 November 2025* Perfect direct replacement for my broken gearbox. Easy to fit and works really well. Would highly recommend, but check it’s the right product before buying. ### ⭐⭐⭐⭐⭐ Just brilliant *by L***R on 1 March 2026* Absolutely brilliant and fits like a glove thank you ### ⭐⭐⭐⭐ Gu old style door lock. *by H***S on 6 February 2025* Great replacement mechanism.lockplate hole needed opened up as lock was wider.serves purpose well. ## Frequently Bought Together - GU Old Style 35mm uPVC Door Lock Centre Case Gearbox Single Spindle - JCP UPVC Door Handle Pair, 122mm Screw Centres, 92 PZ 92mm Sprung Set, Backplate 220mm X 30mm - White --- ## Why Shop on Desertcart? - πŸ›’ **Trusted by 1.3+ Million Shoppers** β€” Serving international shoppers since 2016 - 🌍 **Shop Globally** β€” Access 737+ million products across 21 categories - πŸ’° **No Hidden Fees** β€” All customs, duties, and taxes included in the price - πŸ”„ **15-Day Free Returns** β€” Hassle-free returns (30 days for PRO members) - πŸ”’ **Secure Payments** β€” Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** β€” Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.co.th/products/508290605-gu-old-style-35mm-upvc-door-lock-centre-case-gearbox](https://www.desertcart.co.th/products/508290605-gu-old-style-35mm-upvc-door-lock-centre-case-gearbox) --- *Product available on Desertcart Thailand* *Store origin: TH* *Last updated: 2026-06-07*