---
product_id: 52752355
title: "XFORT Viper Key Locking Cable Window Restrictor in White, Durable Window Safety Lock for Child Safety and Window Security"
brand: "xfort"
price: "B/.59"
currency: PAB
in_stock: true
reviews_count: 8
category: "Xfort"
url: https://www.desertcart.com.pa/products/52752355-xfort-viper-key-locking-cable-window-restrictor-in-white-durable
store_origin: PA
region: Panama
---

# Key Locking Mechanism Easy Installation 1000N Force Resistance XFORT Viper Key Locking Cable Window Restrictor in White, Durable Window Safety Lock for Child Safety and Window Security

**Brand:** xfort
**Price:** B/.59
**Availability:** ✅ In Stock

## Summary

> 🔐 Secure Your Peace of Mind!

## Quick Answers

- **What is this?** XFORT Viper Key Locking Cable Window Restrictor in White, Durable Window Safety Lock for Child Safety and Window Security by xfort
- **How much does it cost?** B/.59 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.com.pa](https://www.desertcart.com.pa/products/52752355-xfort-viper-key-locking-cable-window-restrictor-in-white-durable)

## Best For

- xfort enthusiasts

## Why This Product

- Trusted xfort brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **DIY Friendly:** Simple installation with multi-substrate fixing screws.
- • **Safety First:** Protects children from falls and unauthorized access.
- • **Built to Last:** Hardened steel cable resists cutting and corrosion.
- • **Trusted Brand:** XFORT stands for quality and innovation in home safety.
- • **Universal Fit:** Compatible with all window types for versatile use.

## Overview

The XFORT Viper Key Locking Cable Window Restrictor is a robust safety solution designed to limit window openings, ensuring child safety and security in various environments. Made from durable materials, it withstands significant force and is easy to install on multiple window types.

## Description

Durable steel cable window restrictor limits opening distance to prevent falls and unauthorized access, ensuring a secure environment for homes and public buildings.

Review: Brilliant product - simple instructions and took a matter of minutes to install - Value - the product, at the price I paid, was extremely good value. There were more affordable options available however there seemed to be a very obvious drop in quality and given their function I didn’t think this would be appropriate. Quality - the product appears to be of brilliant quality, more than enough for the average window. I’ve used a strong amount of force to open the window numerous times to test this, and no budging whatsoever. Installation - the instructions make it very simple, though the product itself is very intuitive and a common-sense approach can be applied. The first one took around 10 minutes, which included a little getting the feel for the product. The second took 5 minutes. There are 4 in the pack however I’m yet to install these. Appearance - the product looks high-quality, features nice covers for both screws. The product can’t be faulted on this in my opinion. There are various options dependent on the nature of the window in question Overall - I couldn’t recommend this product highly enough. It’s functional, sturdy, easy to install fitting very well and will undoubtedly serve its purpose.
Review: AWESOME SECURITY !!! - EXCELLENT . Easy to fit & makes the window a tad more secure. Good value & definately would buy again. Buying a pack for me mother to ramp up security & peace of mind .

## Features

- FUNCTION: The key locking window restrictor is designed to limit the opening distance of windows, enhancing safety and security. Ideal for preventing child falls, unauthorized access, and complying with safety regulations, it ensures a secure environment in homes and public buildings
- COMPOSITION: Crafted with a hardened steel cable, this window lock is resistant to cutting and can withstand forces exceeding 1000N. This child safety lock is designed to resist oxidation and corrosion, ensuring durability and longevity
- APPLICATION: Suitable for all window types, including uPVC, aluminium, wooden, and metal profiles. This window guard is perfect for use in homes, schools, hospitals, and other buildings where child safety and security are paramount.
- FITTINGS: Comes with multi-substrate fixing screws, allowing installation on various window types. The installation is straightforward, ensuring a secure fit for effective use as a window safety lock.
- HANDING THE POWER TO YOU: XFORT is a brand synonymous with quality and innovation, that strives to make DIY more accessible and less intimidating to the everyday person. With expert guidance and quality products, our goal is to support your DIY journey every step of the way.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Manufacturer | Maher London Ltd |
| Part Number | 8P-E4MB-KEOP |
| Product Dimensions | 27.99 x 15.01 x 3 cm; 160 g |
| Manufacturer reference | 8P-E4MB-KEOP |
| Size | 20cm |
| Colour | White |
| Item Package Quantity | 1 |
| Batteries included? | No |
| Batteries Required? | No |
| Item Weight | 160 g |

## Images

![XFORT Viper Key Locking Cable Window Restrictor in White, Durable Window Safety Lock for Child Safety and Window Security - Image 1](https://m.media-amazon.com/images/I/51n6YaxYPEL.jpg)

## Available Options

This product comes in different **Item Package Quantity** options.

## Questions & Answers

**Q: can you shorten the length of the cord to limit further how far the window can open?**
A: No.  Both ends are pre-terminated.   Why do you want to shorten it anyway?   Position the fitting to give you the opening width you want.

**Q: Images have the lengths of the two screw in parts (40 & 65mm) what are the widths? TIA!**
A: Hi - Sorry I have moved from the house I fitted this in - I can tell you it worked well though.

**Q: Can these be used on Velux roof windows?**
A: Icant see why not, just be careful where you fix the sash part, with screws, as you might crack the glass

**Q: Could this be used to allow a french door to only open a few inches ?**
A: it may be possible but it will not hold the door open . It would stop the door opening more than a few inches but any draughts or wind would cause the door to move .

## Customer Reviews

### ⭐⭐⭐⭐⭐ Brilliant product - simple instructions and took a matter of minutes to install
*by A***J on 5 February 2025*

Value - the product, at the price I paid, was extremely good value. There were more affordable options available however there seemed to be a very obvious drop in quality and given their function I didn’t think this would be appropriate. Quality - the product appears to be of brilliant quality, more than enough for the average window. I’ve used a strong amount of force to open the window numerous times to test this, and no budging whatsoever. Installation - the instructions make it very simple, though the product itself is very intuitive and a common-sense approach can be applied. The first one took around 10 minutes, which included a little getting the feel for the product. The second took 5 minutes. There are 4 in the pack however I’m yet to install these. Appearance - the product looks high-quality, features nice covers for both screws. The product can’t be faulted on this in my opinion. There are various options dependent on the nature of the window in question Overall - I couldn’t recommend this product highly enough. It’s functional, sturdy, easy to install fitting very well and will undoubtedly serve its purpose.

### ⭐⭐⭐⭐⭐ AWESOME SECURITY !!!
*by P***N on 10 August 2025*

EXCELLENT . Easy to fit & makes the window a tad more secure. Good value & definately would buy again. Buying a pack for me mother to ramp up security & peace of mind .

### ⭐⭐⭐⭐ Pretty near perfect...
*by R***E on 8 January 2022*

This is a well made product with a plastic covered steel cable that should be strong enough to withstand any attempt to break it. It's dead easy to fix. However, I used my own screws as the screws that came with it were a bit too long and are intended to be impossible to unscrew. This is as a safety measure, although I don't imagine even the most intrepid child is up to unscrewing tightly fixed screws. One fact is that the plastic covers for the two parts you screw in are, once pushed over the metal parts, almost impossible to remove without breaking the covers. So again from a safety point of view it means children won't be up to that task either. But just make sure the two metal fixtures are screwed into exactly the right places before you push the covers over them. However, the positives well outweigh the slight negatives so don't let it put you off. I actually fixed two to each window, one on each side of the window, as an extra precaution as I was fitting these in high up windows for my grandson. I just wanted to be extra sure to keep him safe. There are cheaper types that look similar but the steel cable is thinner. Also, unlike the ones I'm reviewing here, some come with adhesive pads. NEVER use these, especially if securing a window that is high up and you have children. In my experience adhesive pads are simply not strong enough or are likely to just come off anyway, with what could be devastating results.

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*Product available on Desertcart Panama*
*Store origin: PA*
*Last updated: 2026-02-13*