Apply Discount Code
PAR-L2C22S-SS
Union L2C22S DDA 55mm Backset Euro Deadlock Satin
Main image
Click to view image in fullscreen
![]()
Union L2C22S DDA 55mm Backset Euro Deadlock Satin
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
£30.24
Incl. VAT
£25.20
Excl. VAT
Incl. VAT
Excl. VAT
Incl. VAT
Excl. VAT
Price is for/per each
-
+
See our full range:
Description
Reliable Commercial Security with Inclusive Access
Specifying ironmongery for modern commercial and institutional properties presents a complex balancing act. Facilities managers, architects, and joinery contractors must deliver uncompromising physical protection against forced entry while keeping everyday access effortless for all building users. Traditional mortice lock designs often fall short of modern standards, leaving doors difficult to operate for individuals with reduced physical dexterity and exposing property owners to legal non-compliance risks under UK accessibility guidelines.
The Union L2C22S DDA 55mm Backset Euro Deadlock Satin directly resolves this challenge by uniting heavy-duty engineering with universal design principles. Manufactured by an industry leader in architectural locking, this lock body is engineered around standard European dimensions to provide clean integration into both new builds and retrofitted timber doors. Its internal mechanics deliver exceptionally smooth key operation, eliminating the stiff resistance often found in conventional deadlocks and ensuring compliant performance across demanding environments.
Fully tested to BS EN 12209 and rigorously assessed for use on 30-minute and 60-minute timber fire doors under EN 1634-1, this robust mortice lock helps satisfy key duties under the Equality Act. Whether deployed in educational establishments, healthcare environments, corporate offices, or municipal facilities, it delivers the structural integrity and compliance assurance essential for high-traffic public buildings.
Stage-by-Stage Operational Pipeline
Stage 1 Timber Preparation
The mortice pocket is prepared within the timber door stile to accommodate the 83mm overall case depth and 165mm case height. The standard 55mm backset guarantees comfortable finger clearance from the door frame, preventing trapped knuckles during daily operation.
Stage 2 Euro Cylinder Installation
The lock case features standard European 72mm centres designed to accept any standard euro profile cylinder or thumbturn. Integrated through-bolt piercings at 38mm centres allow secure fitting of reinforced security escutcheons directly through the body, shielding against cylinder snapping.
Stage 3 Double Throw Engagement
Turning the key initiates the low-friction gearing to project the solid stainless steel deadbolt. A secondary turn extends the bolt to its full 20mm throw deep into the steel strike box, forming a rigid physical barrier against lateral spreading and forced entry.
Stage 4 Long-Term Protection
The heavy-gauge black powder coated steel body resists moisture and debris accumulation within the timber core. Paired with a brushed satin stainless steel forend and matching strike plate, the assembly withstands relentless daily cycles with minimal maintenance.
Key Architectural Advantages
Selecting the Union L2C22S DDA 55mm Backset Euro Deadlock Satin provides distinct engineering advantages for both project specifiers and building maintenance teams. It bridges the gap between stringent safety standards and clean aesthetic appeal.
- Universal Handing Flexibility. The symmetrical case profile and reversible forend allow the lock to be installed on both left-hand and right-hand hinged timber doors without disassembling the internal mechanism.
- Enhanced Physical Security. The 20mm double throw deadbolt is constructed from high-grade solid stainless steel, providing exceptional resistance against hacksawing, physical attacks, and levering forces.
- Full Accessibility Compliance. The lock geometry and low-torque movement satisfy the detailed recommendations of BS8300 and Approved Document M, helping facilities meet ongoing Equality Act obligations.
- Fire Door Certification. Extensively assessed under EN 1634-1, this lock case is certified for integration into FD30 and FD60 timber fire door assemblies when fitted alongside appropriate intumescent materials.
- Durable Architectural Finish. The visible forend and strike plate are finished in premium grade satin stainless steel, matching contemporary architectural ironmongery suites while resisting surface scratching and corrosion.
- Five-Year Manufacturer Guarantee. Supported by Union's renowned engineering heritage, the unit is backed by a 5-year guarantee for long-term peace of mind in high-traffic applications.
Detailed Specifications
| Specification | Rating or Standard | Practical Details |
|---|---|---|
| Product Model | L2C22S | Modular European style architectural euro profile deadlock |
| Backset Dimension | 55mm | Distance from forend edge to cylinder centre line |
| Case Depth and Height | 83mm x 165mm | Compact case height allowing solid mortice core support |
| Forend Dimensions | 235mm x 24mm | Flat faceplate profile in satin stainless steel |
| Deadbolt Material and Throw | 20mm Double Throw | Solid stainless steel bolt projected fully in two turns |
| Centres and Piercings | 72mm Centres / 38mm Piercing | Standard euro cylinder layout with bolt-through escutcheon holes |
| Mechanical Standard | BS EN 12209 : 2003 Certified | CE Marked and EC Certificate number 0832-CPD-6045 |
| Fire Resistance | EN 1634-1 Assessed | Approved for 30 and 60 minute timber fire door sets |
| Accessibility Standard | BS8300 / Approved Document M | Assists in fulfilling requirements under the Equality Act |
| Case Finish | Black Powder Coat | Corrosion-resistant protective coating on heavy gauge steel |
| Warranty Coverage | 5 Year Guarantee | Comprehensive manufacturer backing for operational defects |
Professional Fitting Recommendation
When installing this deadlock into fire rated doors, always verify that the lock case is encased in manufacturer approved intumescent mastic or pre-cut intumescent jackets. Maintaining proper fire door certification requires adhering strictly to the fire test evidence and using appropriate fixing screws into sound timber.
Need Expert Technical Advice for Your Project?
If you are unsure whether this mortice lock satisfies your specific fire door certification, master keying, or accessibility requirements, our specialist hardware advisors are ready to assist you.
Contact Our Team TodaySpecification
| Manufacturer | Union |
|---|---|
| Dimensions | 165 (H) x 83 (D) |
| Guarantee | 5 Year |
| Lock Type | Mortice Deadlock |
| Lock Operation | Euro Cylinder |
| Lock Backset | 55mm |
| Faceplate Width | 24mm |
| Environmental Suitability | All |
| Mechanism | Cylinder |
| Door Material Suitability | Wood |
| Max Door Thickness (mm) | 75 |
| Forend Finish | Stainless Steel |