Guardian G4055 151Mm S.Steel Horizontal Mortice Door Latch
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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Description
Guardian G4055 151Mm S.Steel Horizontal Mortice Door Latch
Choosing the correct hardware for your doors involves balancing structural integrity with aesthetic appeal. The Guardian G4055 151mm Stainless Steel Horizontal Mortice Door Latch represents a pinnacle of engineering for both residential and commercial applications. This piece of hardware provides a smooth, reliable operation that ensures your doors remain secure while functioning effortlessly on a daily basis.
At Doorfit, we understand that professional installers and homeowners alike require components that offer longevity and consistent performance. This specific item is designed to handle the rigours of high-traffic environments, providing a robust solution for timber doors that demand both security and a clean, modern finish. With its precise dimensions and durable material construction, this model stands as a trusted choice for modern door architecture.
Superior Mechanical Engineering and Physical Forces
The operational mechanics of this latch are built upon the principles of rotational force and spring tension. When you engage the handle, the internal mechanism translates that horizontal motion into a precise withdrawal of the latch bolt. This design eliminates the common issues of jamming or sagging that plague cheaper alternatives.
Because the internal components are crafted from high-grade materials, the hardware resists the physical forces of daily usage. The spring mechanism provides just the right amount of resistance, ensuring that the bolt engages firmly with the strike plate every single time. By distributing the mechanical load across the entire housing, this unit prevents premature wear and ensures the internal springs maintain their tension over many thousands of cycles.
Pro-Tip for Installation: Always ensure the mortice pocket is cut with enough clearance to allow for natural thermal expansion of the door material, which guarantees the Guardian G4055 151Mm S.Steel Horizontal Mortice Door Latch maintains its smooth operation regardless of seasonal humidity changes.
Operational Workflow for Users
Interacting with this latch is a seamless experience that highlights the importance of quality hardware. When a user approaches the door, the natural ergonomic motion of gripping the handle initiates the process. The internal cam rotates, overcoming the pressure of the internal spring to retract the bolt from the strike plate.
- The user applies minimal downward pressure to the lever which causes the spindle to rotate within the hub.
- The rotation moves the retraction arm which pulls the bolt inward to clear the strike plate gap.
- The user pushes or pulls the door to traverse the threshold while the bolt remains fully recessed.
- Once the handle is released, the high-tension spring returns the mechanism to the resting state and pushes the bolt outward as the door closes.
- The beveled edge of the bolt allows for a soft click as it automatically secures the door back into the frame upon contact.
Ergonomics, Safety, and Professional Compliance
In modern architecture, the comfort of the end user is just as important as the security of the premise. This Guardian G4055 151Mm S.Steel Horizontal Mortice Door Latch is designed to operate with low friction, meaning that people of all ages and physical capabilities can open doors with minimal effort. This is a critical factor for compliance in public buildings and offices where ease of access is mandatory.
Furthermore, the physical construction promotes safety by ensuring the latch does not fail during critical moments. By reducing the reliance on repetitive maintenance, this component helps building managers maintain a safe environment. You will find that the tactile feedback provided by this hardware is consistent, giving the user peace of mind that the door is latched securely every time it closes.
Long Term Commercial Value and ROI
Investing in high-quality hardware is a classic example of reducing overheads through smart procurement. While cheaper latches may seem cost-effective initially, the frequency of replacements and the labour costs associated with frequent repairs quickly negate those savings. This stainless steel model is built to resist corrosion and structural fatigue, effectively minimising your long-term maintenance cycles.
By protecting your assets with reliable hardware, you reduce the risk of door damage caused by misaligned latches or failed springs. Over the lifespan of a building, this represents a significant saving in both financial terms and administrative effort. We recommend this model for developers who want to avoid callback issues and building owners who prioritise the value of their property infrastructure.
Technical Specifications
When selecting your hardware, please refer to the following specifications to ensure compatibility with your existing door setup. This model has been refined to fit standard industry cutouts for mortice latches, making it an excellent choice for both new installations and retrofitting projects.
| Feature | Specification Details |
|---|---|
| Product Name | Guardian G4055 Horizontal Mortice Latch |
| Total Length | 151 millimetres |
| Material | High grade stainless steel |
| Latch Type | Horizontal mortice latch |
| Finish | Brushed stainless steel |
| Application | Internal timber door security |
| Durability | High cycle spring tested |
Installation Guidance for the Professional
Installing this equipment requires standard woodworking tools but demands a high degree of precision to ensure the longevity of the product. Begin by marking the centre line of the door edge and aligning it with the strike plate location on the door frame. Ensure that your mortice chisel is sharp to maintain the integrity of the timber fibres, as a clean pocket is essential for the stability of the housing.
Once the housing is seated, check for any resistance in the spring operation before fixing the faceplate permanently. If you encounter any binding, check that the spindle is perfectly level across the door face. Proper alignment is the secret to a latch that lasts for decades rather than years. By following these steps, you ensure that the internal mechanism is perfectly square and the bolt travel is never restricted by wood debris or misalignment.
We believe that when you choose the Guardian G4055 151Mm S.Steel Horizontal Mortice Door Latch, you are choosing a product that bridges the gap between traditional craftsmanship and modern manufacturing. Whether you are outfitting a new commercial office floor or upgrading the internal doors in a family home, this latch provides the reliable, smooth, and secure performance that you expect from premium door hardware. Order your units today through the Doorfit portal and experience the difference that professional-grade materials make to your building maintenance and overall security profile.
Specification
| Manufacturer | Imperial |
|---|---|
| Guarantee | 10 Year |
| Lock Backset | 127mm |
| Follower Size (mm) | 8 |
| Faceplate Width | 25mm |
| Mechanism | Latch |
| Door Material Suitability | Wood |
| Forend Finish | Stainless Steel |

