Penkid White Window & Door Restrictor
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
Penkid White Window & Door Restrictor
Ensuring the safety of your loved ones within the home is a paramount responsibility for every property owner. The Penkid White Window & Door Restrictor serves as an essential barrier that prevents accidental falls while allowing for the controlled ventilation of your living spaces. This high quality hardware solution is engineered to provide peace of mind in residential, educational, and commercial environments.
By limiting the opening distance of your windows and doors, this device creates a secure environment without compromising on the flow of fresh air. It is a sophisticated yet simple mechanical solution that addresses the modern requirement for both child safety and property security. Whether you are safeguarding a nursery or securing a public building, this unit offers the perfect balance between accessibility and protection.
Robust Engineering and Mechanical Physics
At the core of this safety device lies a commitment to structural integrity. The 20cm cable is designed to withstand significant physical stress, boasting a tensile strength capable of enduring up to 550 kg of force. This immense load capacity ensures that the unit remains intact even under extreme pressure or attempted forced entry.
The mechanical design focuses on minimising component flex and material fatigue. Because the cable is constructed from high-tensile steel and finished with a durable coating, it resists the gradual wear that often plagues inferior safety hardware. This level of resilience is critical when considering the kinetic energy involved in a sudden impact against a window sash or door frame.
The internal locking mechanism is precision-engineered to maintain tension while providing enough flexibility to accommodate minor shifts in the window frame due to temperature fluctuations. By distributing the load across the mounting brackets, the hardware prevents localised stress points that could otherwise lead to structural failure over time. The physical physics of the system relies on a locked loop configuration which forces any external pressure to be absorbed by the mounting bolts rather than the locking cylinder itself.
Operational Workflow for Maximum Security
Interacting with this item is designed to be intuitive and efficient for the end user. When you first install the restrictor, the mounting process involves securing the brackets to the frame and the opening sash using the provided high-grade screws. To engage the restrictor for daily use, you simply allow the window or door to open to the predetermined 20cm limit where the cable holds firm.
- You start by aligning the base plates with the frame of your window or door to ensure the cable remains taut during operation.
- The installation involves using heavy duty screws that anchor the device firmly into the substrate of the frame material.
- Once the base plates are secure, the cable is inserted into the locking housing which clicks into place to confirm engagement.
- If you require full access for cleaning or emergency egress, you insert the provided key into the lock cylinder located on the main housing.
- Turning the key releases the locking bolt, allowing the cable end to be detached from the housing so the window or door can be opened fully.
- Once the window is closed again, the cable end can be reinserted into the housing, where it clicks into place automatically for added convenience.
The system remains locked until the key is used again, ensuring that children cannot tamper with the mechanism or bypass the safety setting. This workflow is designed to be quick for adults while remaining entirely baffling to toddlers and young children who lack the dexterity to operate the key system.
Ergonomics and Safety Compliance
Beyond the physical strength of the hardware, the design prioritises the health and safety of the user. The sleek white finish ensures that the restrictor blends seamlessly with modern interior aesthetics, reducing the visual clutter often associated with safety equipment. By choosing a product that is CE marked, you are investing in a device that meets rigorous European safety standards.
This compliance provides assurance that every unit has undergone testing for load bearing, corrosion resistance, and operational longevity. Using this equipment reduces the operational errors that often occur with less reliable, non-locking safety devices. The ease of use also prevents physical fatigue, as the locking mechanism requires minimal torque to engage or disengage, making it accessible for elderly users or those with limited grip strength.
Professional Tip: Regular maintenance of your window hardware is essential. We recommend checking the cable for signs of wear and ensuring the key turns smoothly in the lock every six months to maintain peak performance.
By following these simple maintenance steps, you ensure that the internal springs and pins remain lubricated and free from debris. This extends the life of the product significantly and ensures that in the event of an emergency, the key will operate flawlessly every time.
Commercial Value and Longevity
Investing in premium security hardware is a strategic decision for any property manager or homeowner. While cheaper alternatives may seem attractive initially, the cost of replacing failed components or managing the fallout of a safety breach far outweighs the initial investment in a reliable system like this one. The 5 year warranty provided with this item reflects our confidence in its durability and construction quality.
By minimising the need for frequent replacements, you reduce your long term operational overheads significantly. Furthermore, this device acts as an effective deterrent against unauthorised access, protecting your valuable assets from loss or damage. Whether you are managing a block of apartments or securing your own family home, the value proposition lies in the combination of safety, durability, and ease of maintenance.
The return on investment is realised through the reduction in maintenance callouts and the increased lifespan of the window frames themselves. Because the load is distributed correctly, you avoid the structural damage that often occurs when windows are forced against poorly designed or weak limiters. This makes it an ideal choice for high traffic environments where reliability is non-negotiable.
Universal Compatibility and Applications
One of the primary benefits of this restrictor is its versatility across different frame materials. The engineering team has ensured that the mounting hardware is effective on a wide variety of profiles. The device is fully compatible with modern PVC window and door frames, where material integrity is vital for secure mounting. It provides excellent performance on aluminium profiles, which are often used in high-traffic commercial buildings. The hardware is robust enough for traditional wooden frames, provided the screws are driven into solid sections of the timber. Metal profiles and composite doors can also be retrofitted with this system, making it a universal choice for diverse architectural projects. Whether you are looking to secure a bedroom window on an upper floor or manage access to a patio door, this item provides the necessary flexibility. Its compact size ensures that it does not interfere with blinds, curtains, or other window treatments, making it an unobtrusive addition to any room.
Technical Specifications
| Feature | Specification |
|---|---|
| Material | High-tensile steel cable with reinforced housing |
| Finish | Durable white powder coating |
| Cable Length | 20cm fixed length |
| Load Capacity | Up to 550 kg force |
| Compatibility | PVC, Aluminium, Wood, Metal |
| Lock Type | Key operated locking cylinder |
| Certification | CE Marked |
| Warranty | 5 Years |
By choosing this restrictor, you are opting for a proven security solution that balances strength with user convenience. Its ability to withstand significant force while maintaining a simple, key-operated workflow makes it the ideal choice for modern safety requirements. Trust in the quality of Doorfit to provide the hardware you need to protect your premises effectively. Order your units today to ensure your windows and doors are fully compliant and secure for years to come.
Specification
| Manufacturer | WP |
|---|---|
| Finish | White |

