Union 1448 Black Japanned 140Mm 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. |
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Description
Traditional Security with the Union 1448 Black Japanned 140mm Rim Lock
Fitting hardware onto period properties or rustic internal timber doors often presents a unique set of challenges. Modern mortice locks require deep internal pocket preparation that can compromise the structural integrity of thin, heritage timber doors. At the same time, finding a surface mounted locking mechanism that delivers reliable, straightforward privacy without ruining the character of your space can be difficult. The Union 1448 Black Japanned 140Mm Rim Lock provides an elegant, traditional solution designed specifically to meet both aesthetic and practical security requirements.
Supplied by Doorfit, this classic rim lock features an authentic black japanned protective finish that echoes generations of British architectural metalwork. Because it fixes directly to the inner face of the door rather than fitting deep inside the leaf, installation is straightforward and avoids extensive timber removal. You preserve the original fabric of your door while benefiting from the reassuring reliability that the Union brand has built over decades of UK ironmongery manufacturing.
Whether you are restoring a period cottage, fitting out traditional outbuildings, or adding authentic charm to a domestic interior, this 140mm rim lock strikes the ideal balance between heritage styling and everyday convenience. It provides a smooth latching action for regular passage alongside a dedicated deadbolt for positive locking when privacy is needed.
Stage by Stage Installation and Operational Pipeline
Stage 1 Door Assessment and Marking
Start by holding the lock body flat against the inside face of your door at your desired working height. Ensure the unit sits completely level and mark through the spindle hole, the keyway aperture, and the outer fixing points. Taking care during this preliminary stage guarantees that your escutcheon and door knob spindles align smoothly with the inner mechanism.
Stage 2 Aperture Preparation
Drill clean, perpendicular holes straight through the door leaf for the follower spindle and key entry. Because the Union 1448 mounts directly onto the door face, you only need to drill these clean clearance holes rather than morticing out a large internal pocket, helping you keep your original joinery strong and intact.
Stage 3 Lock Case Surface Mounting
Align the lock body with your prepared holes and secure it using appropriate wood screws. The durable black japanned casing will sit flush against flat wooden ledged, braced, or panelled doors. Test the key action and ensure the interior mechanism moves smoothly before tightening all screws completely.
Stage 4 Keeper Alignment and Final Testing
Affix the matching surface strike box onto your door frame, making sure the latch and deadbolt engage freely without binding. Connect your chosen rim knobs and test the latch release from both sides of the door. A quick turn of the key confirms that the deadbolt extends and retracts with complete ease.
Authentic Heritage Design Meets Dependable Engineering
The appeal of a traditional rim lock lies in its honest, visible craftsmanship. With the Union 1448 Black Japanned 140Mm Rim Lock, every operational component is protected inside a rugged steel enclosure finished with classic black japanning. This time tested coating delivers a subtle, low sheen finish that resists indoor dampness and wear while recreating the authentic look of historical British ironwork.
Unlike flimsy modern reproductions, this lock uses carefully balanced internal springs that provide a solid, reassuring snap whenever the latch closes. It works seamlessly alongside authentic rim furniture, such as brass, cast iron, or wooden door knobs, allowing you to tailor your door fittings to match your exact home interior scheme.
Technical Specifications
| Specification | Rating or Standard | Practical Details |
|---|---|---|
| Manufacturer | Union Architectural Hardware | Established UK hardware design and engineering standards |
| Product Code | Union 1448 | 140mm footprint traditional horizontal rim lock |
| Lock Case Size | 140mm overall width | Compact horizontal shape suited to narrow stiles and traditional timber doors |
| Finish | Black Japanned | Traditional baked black finish offering classic period styling |
| Mounting Type | Surface Rim Mounted | Direct surface screw fixing with no large mortice pocket needed |
| Locking Mechanism | Keyed Deadbolt with Latch | Provides both day to day spring latching and secure key operated locking |
| Furniture Compatibility | Rim Knob Sets | Accommodates standard spindle arrangements for external and internal knobs |
Key Benefits for Your Property
- Preserves Original Joinery Because you do not need to cut a deep mortice pocket, your existing timber doors keep their full structural thickness.
- Authentic Period Appearance The deep black japanned treatment provides an antique look that complements ledged, braced, and cottage style doors.
- Straightforward Operation The integrated spring latch handles daily traffic smoothly, while the dedicated deadbolt gives you peace of mind whenever privacy is required.
- Flexible Handing Designed to work cleanly on internal inward opening doors across residential homes, period cottages, and heritage developments.
Rim locks provide a wonderfully tangible connection to traditional British architectural design. Selecting genuine Union ironmongery ensures that you achieve that timeless period feel without giving up smooth mechanical operation or everyday durability.
Need Assistance With Your Heritage Ironmongery?
Whether you need advice on matching door knobs, frame strike clearances, or large restoration orders, our specialist ironmongery team is ready to help you find the right fittings for your doors.
Contact Our TeamSpecification
| Manufacturer | Union |
|---|---|
| Finish | Black Japanned |
| Dimensions | 140mm |

