Apply Discount Code
PAR-1439-152-LH
Union 1439 Black Japanned 152mm L.Hand Rim Lock
Main image
Click to view image in fullscreen
![]()
Union 1439 Black Japanned 152mm L.Hand Rim Lock
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. |
View Delivery Information
£81.90
Incl. VAT
£68.25
Excl. VAT
Incl. VAT
Excl. VAT
Incl. VAT
Excl. VAT
Price is for/per each
-
+
See our full range:
Description
Union 1439 Black Japanned 152mm L.Hand Rim Lock
When searching for a heritage style security solution that balances traditional aesthetics with reliable mechanical performance, the Union 1439 Black Japanned 152mm L.Hand Rim Lock stands as a benchmark in door hardware. Designed specifically for internal timber doors that open inwards, this locking mechanism brings a sense of timeless craftsmanship to any interior space. It is a perfect choice for property restoration projects where period accuracy is just as vital as modern security standards.
This piece of hardware offers a robust feel that speaks to the quality of British engineering. Its striking black enamel finish provides a protective layer against corrosion while creating a visual contrast that works beautifully on both dark and light wood surfaces. Whether you are upgrading a historic cottage or adding a touch of rustic charm to a new build, this item delivers both form and function in one package.
Unrivalled Mechanical Performance
The mechanical integrity of this lock relies on precision manufacturing and high quality materials. At its core, the three lever system operates with consistent tension, ensuring that the deadbolt remains secure when engaged. The brass components for the deadbolt and latch bolt are chosen specifically for their low friction properties, which allows the mechanism to operate smoothly over many years of heavy use.
- The brass latch bolt is designed to retract effortlessly when the knob is turned, providing a satisfying and tactile user experience every time the door is opened.
- The deadbolt provides substantial resistance to forced entry, anchoring the door securely to the frame to offer peace of mind for your property.
- Every movement within the internal casing is engineered to minimise wear, reducing the chances of the mechanism seizing or sticking during seasonal temperature changes.
Step by Step Operational Workflow
Understanding how to interact with this hardware ensures longevity and ease of use for all household members. When you approach the door from the inside, you will find the operation is intuitive and designed for quick access.
To operate the latch, simply grip the door knob and rotate it, which pulls the brass latch bolt back into the casing and allows the door to swing freely. When closing the door, the bevelled edge of the latch bolt contacts the keep, depressing the spring loaded mechanism before snapping back into place once the door is fully closed. This simple yet effective physical cycle is what makes this design so reliable in residential settings.
For locking the door, insert the provided steel nickel plated key into the keyhole on either side of the door. As you rotate the key, you will feel a firm but smooth resistance as the levers align and drive the solid brass deadbolt into the keep. This physical feedback is a hallmark of high quality hardware, confirming that the deadbolt has travelled its full distance to create a secure lock.
Ergonomic Benefits and Safety Compliance
Properly fitted hardware does more than just secure a room. It plays a significant role in the ergonomics of your daily routine. By ensuring that the latch mechanism is perfectly aligned with the keep, you remove the need to pull or lift the door while turning the knob. This reduces unnecessary physical strain on the wrist and hand, making the door accessible for users of all ages.
In a commercial or professional environment, complying with safety standards is essential. This item provides a secure barrier that holds firm under pressure. Its robust steel casing is designed to withstand the daily forces of impact and vibration, ensuring that the door remains closed and secure during normal operation. By investing in this level of quality, you are effectively preventing operational errors that often occur with inferior or mass produced locking components.
Long Term Commercial ROI and Value
The decision to install premium hardware is an investment in the long term value of your property. While cheaper alternatives may seem attractive initially, they often require replacement within a few years due to material degradation or component failure. The Union 1439 Black Japanned 152mm L.Hand Rim Lock is built to outlast its counterparts, effectively eliminating the costs associated with repeated maintenance and replacement cycles.
Beyond the direct financial savings, there is the value of time saved. Managing door hardware repairs can be a significant administrative burden in managed properties or busy offices. By choosing a product with a proven reputation for longevity, you reduce the time and effort spent on troubleshooting door issues. This allows you to focus your resources on other important areas of your property management or home maintenance plan.
Installation and Suitability
This lock is designed primarily for timber doors that are up to 50mm thick. It is important to note that this is a left hand configuration, meaning it is intended for doors that are hinged on the left side when viewed from the inside of the room. While it is primarily meant for timber, it can be fitted to steel or composite doors provided that the correct specialist fixings are used to ensure the structural integrity of the mounting surface.
If you are not sure if this rim lock is right for your requirements please contact our friendly team today. Our experts are always happy to help you select the right hardware for your specific door setup.
Technical Specifications
The following table provides a clear overview of the technical dimensions and material properties for your reference.
| Feature | Specification |
|---|---|
| Product Name | Union 1439 Black Japanned 152mm L.Hand Rim Lock |
| Case Finish | Black Japanned Enamel |
| Deadbolt Material | Solid Brass |
| Latch Bolt Material | Reversible Brass |
| Locking Mechanism | 3 Lever Security |
| Backset | 53mm |
| Door Thickness Compatibility | Up to 50mm |
| Included Accessories | 2 Steel Nickel Plated Keys |
| Key Blank Reference | KB144 |
The finish of this Union 1439 Black Japanned 152mm L.Hand Rim Lock is a standout feature. Black Japanned is a traditional process that results in a deep, lustrous, and durable black coating. Unlike modern spray paints, this finish has a subtle texture that feels authentic to the touch and resists the common chips and scratches seen on inferior products. It serves as an excellent way to maintain the aesthetic integrity of period properties while benefiting from a modern manufacturing process that ensures consistent quality control.
The internal lever mechanism is designed for security and reliability. With three internal levers, the lock offers a level of security appropriate for internal doors where privacy and moderate protection are required. The ability to key this item alike with the 1139 model provides additional flexibility for landlords or homeowners who wish to manage multiple rooms with a single key system. This is a highly sought after feature for those who want to reduce the clutter on their key ring while maintaining distinct security zones within their property.
Remember that the success of your installation depends on careful preparation. Before mounting the lock, ensure your door is level and that the timber frame is capable of supporting the weight of the hardware. Using the correct pilot holes and fasteners will prevent the timber from splitting and ensure that the casing sits perfectly flush against the door surface. Proper alignment is the final step in ensuring that your new locking system operates with the grace and silence expected of professional grade hardware.
We are confident that this product will provide the level of performance and style you expect for your home or project. If you have any remaining questions about compatibility or installation requirements, please do not hesitate to reach out to our team at Doorfit. We are dedicated to providing the support you need to make the right choice for your security needs.
}Specification
| Manufacturer | Union |
|---|---|
| Finish | Black Japanned |
| Dimensions | 152mm |