Defender High Security Window Lock Model DLG0590H
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
Defender High Security Window Lock Model DLG0590H
Installing window hardware often presents a difficult balance between the high expectations of security compliance and the practical realities of time management on busy construction sites. Many professionals currently struggle with complex espagnolette systems that require significant modifications including bar cropping or awkward routing which consume valuable hours of the working day. The Defender DLG0590H provides a sophisticated answer to these operational challenges by offering a high performance locking mechanism that satisfies modern regulatory requirements without forcing you to compromise on your installation speed.
The manufacturers have successfully removed the need for unnecessary bar adjustments or corner cleaning by streamlining the architectural design of this specific unit. You can integrate this lock into your existing frame profiles with far less effort because every component is engineered to meet the demanding standards of PAS24 and Secured by Design. It represents a forward thinking approach for tradespeople who require a reliable and fully compliant locking solution that avoids the steep learning curve or excessive components often found in older mechanical hardware.
Why Choose the Defender High Security Window Lock Model DLG0590H?
This hardware provides a practical method for increasing residential window security while keeping site labour hours at a manageable level.
Reduced Site Modification
The design team focused on eliminating common friction points like bar cropping or intricate routing procedures. You can complete more jobs within a shorter window because the hardware fits directly into your existing setup without the need for additional profile adjustments which often lead to accidental damage or aesthetic defects in the finished frame.
Certified Security Compliance
Safety is the primary focus of this unit which meets all current BS7950 and PAS24 criteria. These standards provide a clear benchmark for physical protection so that your installations meet necessary UK regulatory obligations every time. You gain peace of mind knowing the hardware holds official Secured by Design status for your clients.
Simplified Component Count
By limiting the total number of screws required and removing the need for complex mechanical adjustments, the system offers improved structural longevity. You spend less time navigating confusing instruction manuals or searching for spare parts because the assembly process is straightforward enough to handle even during the busiest periods on site.
Engineering Quality and Daily Performance
The build philosophy focuses on mechanical simplicity paired with high-grade materials to ensure long-term functionality for the homeowner.
Internal Mechanism and Force Distribution
The internal gearbox is built upon proven technology that has been refined over many years to provide a smooth and positive locking action. Every turn of the handle engages the mechanism with absolute precision so that the homeowner feels a tangible sense of quality whenever they close their windows throughout the changing seasons.
We designed the system to distribute force evenly across the frame which prevents premature wear on the locking points. This approach reduces the internal stress on the moving parts because the weight and pressure are balanced effectively through the high-grade materials used in the manufacture of each individual gear assembly.
Weather Resistance and Long-Term Finish
Each component undergoes specialised treatment to provide significant resistance to corrosion in damp or coastal environments. This coating protects the internal and external surfaces from rust or oxidation so that the hardware maintains its original operational performance even when exposed to harsh British weather conditions over many years of service.
The cam rotation technology allows for effortless adjustment of gasket compression as the window ages or the frame shifts slightly. You provide your clients with a weather tight seal that remains effective with minimal effort because the adjustment process is intuitive and requires only basic tools to achieve the correct tension.
Installation and Operational Workflow
You can follow these three steps to achieve a high-quality installation that respects the structural integrity of your window frames.
Align and Secure
Begin by positioning the lock unit within the profile channel while ensuring that all screw fixings match the pre-drilled points. The precision engineering of the unit allows for a direct fit which avoids the need for manual alignment adjustments that often slow down the fitting process for standard locking systems on the market today.
Set Gasket Compression
Rotate the cams using the dedicated adjustment points to achieve the required level of gasket compression against the window frame. This step is necessary to create a weather-tight finish that prevents draughts or moisture ingress while still allowing for a smooth handle movement during the final stages of the installation process.
Verify Engagement
Test the handle rotation multiple times to confirm that every locking point engages correctly with the keeps installed on the frame. You should observe a consistent and firm locking sensation across all points because the internal mechanism is designed to handle the mechanical load without any hesitation or grinding during operation.
Expert Installation and Care Tip
Check that your frame is perfectly square before securing the final fixings to prevent unnecessary tension on the gearbox. Applying a small amount of silicone-based lubricant to the moving parts every few years keeps the action smooth and ensures the longevity of the finish for your clients.
Technical Specifications
| Feature | Rating / Standard | Practical Details |
|---|---|---|
| Security Compliance | PAS24 (BS7950) | Verified standard for physical resistance against typical attack methods. |
| Accreditation | Secured by Design | Official police initiative approval for high security performance. |
| Adjustment | Cam Rotation | Allows precise modification of seal pressure after the initial fit. |
| Manufacturing | High Grade Steel | Corrosion-resistant coating for long-term reliability in damp areas. |
Longevity and Trade Reliability
Choosing this hardware provides a reliable solution that reduces the need for costly callbacks or warranty repairs for your business. The combination of high-grade materials and simplified design means you can stand by the quality of your work for the long term.
Compatibility and Fitting Notes
Specification
| Finish | Satin Stainless |
|---|---|
| Forend Finish | Stainless Steel |
| Window Material Suitability | UPVC |
| Window Operation | Hinged |
| Faceplate Width | 16mm |
| Lock Backset | 22mm |
| Roller Height | 9mm |
| Gear Type | Centre |

