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FUL-CENTRE-55MM-LOCK
Fullex Genuine SL16 55mm Centre Lock Replacement Split Spindle
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- Genuine SL16 Replacement Gearbox
- 68mm PZ Centres
- Split Spindle Function
- Reversible Handing
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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£70.86
Incl. VAT
£59.05
Excl. VAT
Incl. VAT
Excl. VAT
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Description
Fullex Genuine SL16 55mm Centre Lock Replacement Split Spindle
The SL16 Multipoint has gained an enviable reputation in all markets for strength and reliability in many years of successful service. This Fullex Genuine SL16 55mm Centre Lock Replacement Split Spindle represents the gold standard for maintaining the integrity of your residential security systems. When a centre case eventually fails, you do not need to replace the entire multipoint mechanism. This component is designed to offer a seamless, cost-effective repair solution that restores full functionality to your door.
For maximum security this multipoint door lock can be fitted with the Ultion 3 star TS007 diamond cylinder. By combining this robust gearbox with premium cylinder technology, you create a formidable barrier against unauthorised access. The design ensures that your home remains protected while providing the smooth, reliable operation expected from high-quality architectural hardware.
Mechanical Physics and Load Distribution
Understanding the internal mechanics of this locking unit reveals why it remains a preferred choice for installers. The internal gear train is engineered to convert the rotational torque applied by the handle into linear motion, which then engages the various locking points along the door edge. This conversion process must occur under significant tension, as the mechanism works against the compression of the door seals.
Because the unit handles substantial stress during every cycle, the materials chosen for the internal cam and slide components are critical. The hardened steel components within this item resist deformation even when subjected to high-frequency usage. This structural rigidity prevents the internal parts from flexing or binding, ensuring that every time you engage the locking mechanism, it performs exactly as intended.
Step by Step Operational Workflow
Operating a door equipped with this gearbox is an intuitive process that balances security with ease of use. To initiate the locking sequence, you first close the door to allow the spring-loaded latch to engage automatically with the striker plate. Once the door is pulled flush against the frame, you must lift the handle in an upward motion to extend the bolts into their keep positions.
After the bolts are fully extended, turning the key will project the main deadbolt and immobilise the handle, providing the final layer of security. When you return to the property, the unlocking process is just as straightforward. Inserting your key and rotating it fully will retract the deadbolt. You then push the handle downward to pull the bolts back from the frame and retract the latch, allowing the door to swing open freely.
The split spindle function requires a specific setup to activate correctly. You must break the pin surrounding the spindle hole by lifting the external handle while simultaneously pushing the internal handle down. This precise action allows the hardware to distinguish between internal and external access, which is vital for security. You will hear an audible click confirming the transition, and the mechanism will now only respond to the correct handle or key operation.
Ergonomic Design and User Safety
Modern security hardware must serve the user without requiring excessive physical exertion. The internal spring cassette within this gearbox is calibrated to provide consistent resistance, preventing the handle from drooping over time while remaining easy for residents of all ages to operate. Proper operation of the locking points ensures that the door remains fully sealed, which is essential for maintaining the thermal efficiency of your property.
Compliance with fire and safety regulations often hinges on the reliability of the door hardware. By choosing a genuine replacement part, you ensure that the handle, key, and latching mechanisms function in perfect harmony. This reduces the risk of operational errors where a user might incorrectly assume a door is locked when it is not. A smooth operation cycle ensures that you are never left struggling with a stiff handle in an emergency situation.
Commercial ROI and Long Term Value
Investing in high-quality hardware is a strategic decision for homeowners and property managers alike. While cheaper alternatives might appear attractive at the point of purchase, the costs associated with premature failure are substantial. A faulty locking case can lead to lockouts, the need for emergency locksmith callouts, or even worse, compromised security that leaves assets vulnerable.
By selecting this replacement, you are choosing a component that extends the lifespan of your existing door mechanism by years. It effectively eliminates the need for a full system replacement, which involves removing the entire strip, adjusting the keep plates, and potentially drilling new holes into the door frame. The efficiency of replacing only the centre case allows for quicker maintenance turnarounds and significantly lower labour costs.
Suitable Materials and Key Applications
- This gearbox is perfectly suited for use on composite and timber single doors where high reliability is paramount.
- The non-handed configuration means the unit can be easily adapted for both left-hand and right-hand opening doors.
- The 16mm faceplate design ensures compatibility with a vast range of standard door profiles currently in use across the industry.
- Users benefit from a design that has been stress-tested to handle the expansion and contraction cycles typical of wooden door construction.
- The component is fully compatible with standard Euro profile cylinders, allowing for easy integration with existing master key or restricted access systems.
Expert Advice for Installation We recommend that you verify the backset and PZ measurements of your existing unit before finalising your purchase. If you encounter any difficulty during the fitting process, or if the mechanism does not seat correctly within the door profile, please reach out to our technical support team for guidance on alignment and lubrication procedures.
Technical Specifications
| Feature | Detail |
|---|---|
| Cylinder Type | Euro Profile |
| Backset Dimension | 55mm |
| Lock Centres PZ | 68mm |
| Faceplate Suitability | 16mm |
| Spindle Size | 8mm |
| Handing | Non handed |
| Case Height | 195mm |
| Case Width | 70mm |
Fitting and Maintenance Procedures
Installation is straightforward for those with basic DIY experience. The unit features fixing tabs at the top and bottom of the gearbox, measuring 15mm wide by 9mm deep, which secure the unit to the faceplate. The screws are spaced exactly 206mm apart, which aligns with standard industry patterns for this model. Ensure that the faceplate is cleaned of any debris before mounting the new case to a snug fit against the timber or composite door leaf.
To keep the hardware performing at its peak, we suggest a light application of a silicone-based lubricant once every twelve months. Avoid using heavy grease, as this can attract dust and grit that may cause premature wear to the internal gear mechanism. By maintaining the cleanliness of the latch and deadbolt, you ensure that the locking points slide into their keeps with minimal friction, protecting the integrity of the door frame itself.
Why Choose Doorfit for Your Hardware Needs
At Doorfit, we understand that security is not a luxury, but a fundamental requirement. Our inventory is curated to include only those products that meet rigorous standards of durability and performance. When you choose a replacement part from our collection, you are backed by years of industry experience and a commitment to helping you keep your property secure.
Not sure if this multipoint lock is right for your requirements? If you are not sure if this multipoint lock is right for your requirements please contact our friendly team today to discuss your requirements. We are always ready to provide the technical insights you need to make the correct purchase, ensuring your door hardware remains in top condition for years to come.
Specification
| Manufacturer | Fullex |
|---|---|
| Guarantee | 12 Months |
| Lock Type | Multipoint |
| Lock Operation | Euro Cylinder |
| Lock Backset | 55mm |
| Lock Centres | 68mm |
| Follower Size (mm) | 8 |
| Mechanism | Case Only |
| Door Material Suitability | UPVC / Timber |