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LEG3722LKNP
Legge 3722Lk 79Mm Np Mortice Door Latch
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Legge 3722Lk 79Mm Np 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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£9.48
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£7.90
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Description
Legge 3722Lk 79Mm Np Mortice Door Latch
Selecting the right internal door hardware is a critical decision for both residential renovators and commercial contractors. The Legge 3722Lk 79Mm Np Mortice Door Latch offers a perfect blend of precision engineering and aesthetic refinement. As a foundational component of door functionality, this item ensures your doors operate with smooth, consistent reliability while maintaining a high standard of security.
Designed for longevity, this model features a robust construction that stands up to the rigours of daily use. The nickel-plated finish provides a sophisticated, modern appearance that complements a variety of handle styles and interior palettes. Whether you are refurbishing a heritage property or fitting out a new office block, this piece of hardware is built to perform under pressure.
Engineered for Lasting Reliability
When you invest in high-quality hardware, you are essentially purchasing peace of mind. This unit is designed to integrate seamlessly into standard mortice preparations. Its primary function is to hold the door in a closed position while allowing for easy access when the handle or knob is engaged.
- The internal spring mechanism provides a consistent tactile response that prevents the handle from feeling loose or sloppy over time.
- The nickel plating serves as a protective barrier against oxidation, ensuring the metal remains bright and free from unsightly surface rust.
- Precision tolerances during the manufacturing process mean that the bolt retracts smoothly without creating harsh grinding sounds.
- This piece of equipment is compatible with a wide range of door furniture, making it a versatile choice for diverse design requirements.
Mechanical Physics and Structural Integrity
The operational efficiency of this latch relies on precise mechanical physics. When you rotate the door handle, the internal follower interacts with the latch bolt spring to retract the bolt within the casing. This design minimises friction between moving parts, which is essential for preserving the lifespan of the hardware.
Resistance and tension are expertly balanced to ensure the bolt projects far enough to hold the door securely but retracts easily upon user input. The casing is constructed from high-grade materials to prevent structural flex, even when the door is subjected to heavy traffic. By reducing component strain, the design ensures that the latch maintains its structural integrity without the common failure points associated with cheaper alternatives.
Operational Workflow for the End User
The daily experience of using this hardware is intuitive and effortless. The workflow begins when a user approaches the door and grasps the handle. As the handle turns, the rotary motion is converted into linear force against the internal latch bolt.
The latch bolt then slides smoothly back into the mortice case, allowing the user to push or pull the door open with minimal effort. Once the user releases the handle, the internal spring mechanism forces the bolt back into the extended position. When the door is pushed shut, the bevelled edge of the bolt makes contact with the striking plate, allowing the bolt to slide back automatically before snapping into the strike plate cavity.
Ergonomic Benefits and Safety Compliance
Good hardware design is fundamentally about ergonomics. This model is designed to operate with a light touch, which reduces physical strain for users of all ages and abilities. By ensuring smooth operation, it helps prevent common issues like jammed doors or handles that require excessive force to engage.
In a commercial or professional environment, hardware compliance is non-negotiable. This product meets the high standards required for internal door applications, providing a secure and reliable closure that assists in maintaining fire safety standards. By choosing dependable ironmongery, facility managers can reduce the likelihood of operational errors that could compromise building safety.
Commercial ROI and Long Term Value
While the initial cost of hardware can sometimes influence purchasing decisions, the long term value of this item is clear. Cheap, low-quality latches often fail prematurely, leading to repeated replacement cycles that incur high labour costs and cause significant frustration. Investing in premium gear like this model minimises these overheads by offering superior resistance to wear.
Choosing this hardware is a smart financial decision for property owners. By reducing the need for maintenance and replacements, you protect your assets and ensure that your doors remain functional for years to come.
Technical Specifications
The following table outlines the key technical parameters for the Legge 3722Lk 79Mm Np Mortice Door Latch to ensure it fits your specific installation requirements perfectly.
| Feature | Specification |
|---|---|
| Product Name | Legge 3722Lk 79Mm Np Mortice Door Latch |
| Finish | Nickel Plated |
| Case Depth | 79 millimetres |
| Application | Internal doors |
| Material | Hardened Steel and Nickel |
| Operation | Spring loaded latch bolt |
Installation and Maintenance Guidance
Proper installation is vital for getting the best performance from your latch. It is recommended that you measure your door's thickness and existing mortice cutouts carefully before installation. Using the correct tools for the job will ensure that the latch fits snugly and operates without binding against the door frame.
- Always ensure that the strike plate is aligned correctly to prevent the bolt from scraping against the wood.
- Occasional cleaning with a dry cloth will maintain the nickel finish for a longer duration.
- Do not use abrasive chemicals on the finish, as this can wear away the plating and expose the underlying metal to corrosion.
- Checking the mounting screws every twelve months can help prevent any loosening caused by the natural vibration of door movement.
This Legge 3722Lk 79Mm Np Mortice Door Latch is a benchmark for quality in the door hardware industry. Its combination of robust mechanics, stylish finish, and long term durability makes it an ideal choice for any project. Whether you are updating a single door or managing a large scale commercial fit out, you can trust in the performance of this unit. For any additional enquiries or to explore our full range of door accessories, browse the extensive collections available at Doorfit today.
Specification
| Manufacturer | Legge |
|---|---|
| Guarantee | 10 Year |
| Lock Backset | 60mm |
| Follower Size (mm) | 8 |
| Faceplate Width | 25mm |
| Mechanism | Latch |
| Door Material Suitability | Wood |
| Forend Finish | Nickel Plated |