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NWH-GU-OLD-35MM-CASE
GU Type Old Style 35mm Multipoint Centre Case Replacement
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GU old style multipoint centre door lock case only
In stock
Delivery Information
| Delivery Time Frame | Delivery Information |
| Next Working Day By 1PM | When an order is placed by 3pm for next working day on certain items |
| Standard Delivery | Usually delivered in 2 to 4 working days |
| Delivery Charges | |
| UK Mainland | Prices start at £3.95 for very small items, £6.50 for small, £9.50 for medium and £20 for large/long items |
| Scottish Highlands & Islands, Northern Ireland & Ireland | Prices from £30, please see our delivery page for more info. |
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£19.93
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£16.61
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Description
GU Type Old Style 35mm Multipoint Centre Case Replacement
Maintaining the security and functionality of your external doors is an essential task for any homeowner or facility manager. When a locking mechanism begins to feel stiff, grind during operation, or fails to retract the latch properly, it is often a sign that the internal gearbox is nearing the end of its functional life. The GU Type Old Style 35mm Multipoint Centre Case Replacement provides a precise and professional solution to this common hardware frustration. By opting for a centre case replacement rather than installing an entirely new multipoint locking strip, you save significant time, money, and labour on your door maintenance.
Designed specifically to cater to older installations that utilise the classic GU locking hardware, this unit is engineered for perfect compatibility with existing door configurations. It is crucial to note that this specific model is tailored for the old style GU locks, which feature a unique internal layout distinct from the newer versions currently circulating in the hardware market. When you choose to upgrade your system with this item, you are ensuring that your door remains secure and easy to operate without needing to modify your current door profile or faceplate.
Understanding the Mechanical Physics of Your Door Lock
The mechanical efficiency of a multipoint lock relies on the precise conversion of rotational energy into linear motion. When you push down on a lever handle, the internal spindle turns within this gearbox to exert force against the spring cassette and the locking bolt retraction mechanism. This specific gearbox is built to handle the constant torque applied by the handle, ensuring that the latch is pulled back with minimal resistance and that the hooks or bolts are disengaged smoothly.
In high traffic environments, these internal components undergo significant structural fatigue due to repetitive usage. The design of this replacement unit focuses on distributing load evenly across the internal cams and gears. This reduces the risk of snap failure or premature wear that is often seen in inferior or generic replacements. By using high grade materials in the construction of the gear teeth, this unit maintains the structural integrity required to keep your property protected against forced entry attempts.
Step by Step Operational Workflow
Understanding how to interact with your hardware is the first step toward long term reliability. Following the correct sequence prevents unnecessary strain on the internal springs of the mechanism. The operational workflow for this unit follows the standard lift lever sequence commonly found on composite and uPVC doors.
- Start by ensuring the door is pulled firmly against the frame to align the keep with the latch.
- Lift the handle upward to engage the multipoint hooks or bolts into their respective locking points on the door frame.
- Rotate the key in the cylinder to throw the deadbolt into the locked position, which secures the gearbox in place.
- When exiting the property or moving from room to room, the single spindle design ensures that a standard handle set provides consistent and reliable resistance.
- If you ever need to reverse the latch to suit the handing of your door, simply push the latch clear of the faceplate.
- Once the latch is pushed out, you can twist it to the desired orientation and release it, allowing the internal spring to lock it into the correct position automatically.
Ergonomics, Safety, and Security Compliance
The ergonomic benefit of maintaining a smooth operating lock cannot be overstated. A poorly functioning gearbox often requires the user to exert excessive force on the handle, which can eventually lead to spindle damage or internal handle failure. By installing this GU Type Old Style 35mm Multipoint Centre Case Replacement, you restore the fluid motion of the handle, reducing physical fatigue for elderly users or those with limited grip strength.
Safety compliance is another critical factor in commercial and domestic door security. A lock that requires significant effort to engage may lead users to leave doors partially unsecured. This model ensures that the latch and locking points engage with positive action, meaning your door can be locked and secured with minimal effort. This compliance with basic security standards is essential for insurance purposes and provides peace of mind that your entry points are effectively shielded from unauthorised access.
Commercial ROI and Long Term Value
Investing in a high quality replacement part is a classic example of smart property management. While cheaper, low grade alternatives may seem attractive initially, they often fail within a short period, leading to additional maintenance costs and the potential for a lock-out situation. This centre case is designed for longevity, using durable steel and alloy components that withstand the test of time.
By opting for a centre case repair, you avoid the high costs associated with replacing an entire multipoint locking mechanism, which often involves significant dismantling of the door sash. The ease of installation also reduces the time a door is out of commission, keeping your business or home secure and operational. Choosing this durable hardware ensures that your replacement cycles are extended, effectively lowering the cost of ownership over the total lifespan of the door.
If you are not sure if this centre case is right for your requirements, please contact our friendly team today to discuss your requirements. We are here to help ensure you select the correct part the first time, saving you hassle and time.
Technical Specifications
Accurate measurement is the key to a successful lock repair. Before ordering, we advise that you verify your current measurements to ensure a seamless fit. The 35mm backset is a critical dimension that defines the distance from the centre of the handle spindle to the front of the faceplate.
Key Technical Parameters
| Feature | Specification |
|---|---|
| Product Compatibility | Old Style GU Multipoint Locks |
| Backset Measurement | 35mm |
| Centres | 92mm |
| Operation Type | Lift Lever |
| Spindle Type | Single Spindle |
| Latch Reversal | Manual Push and Twist |
| Application | Centre Case Replacement Gearbox |
Professional Maintenance Tips
To maximise the lifespan of your new GU Type Old Style 35mm Multipoint Centre Case Replacement, we recommend a simple maintenance routine twice a year. Keep the moving parts of the gearbox free of grit and debris by wiping the faceplate and latch with a clean cloth. Applying a small amount of silicone based lubricant to the latch and bolt will ensure they continue to operate with minimal friction. Avoid using oil based lubricants, as these can attract dust and eventually clog the internal mechanism of the lock. Taking these small steps will ensure your door remains secure and easy to operate for years to come.
Whether you are a professional locksmith or a diligent homeowner, our team at Doorfit is committed to providing the hardware you need to get the job done right. We understand that security is non-negotiable, which is why we source only the most reliable components for our customers. Should you have any questions regarding the compatibility of this item with your existing door, feel free to reach out to our team. We are ready to assist you in making the right choice for your repair project.
Specification
| Manufacturer | GU |
|---|---|
| Guarantee | 12 Months |
| Lock Type | Multipoint |
| Lock Operation | Euro Cylinder |
| Lock Backset | 35 |
| Lock Centres | 92mm |
| Follower Size (mm) | 8 |
| Environmental Suitability | Indoor & Outdoor |
| Mechanism | Case Only |
| Door Material Suitability | UPVC / Timber |
| Max Door Thickness (mm) | 65 |
| Forend Finish | Stainless Steel |