CoreMet Steel is a 358 high security fence supplier in the UK providing anti-climb mesh fencing systems for projects across the UK and global markets. Known as prison mesh or anti-climb fencing, 358 systems are designed for maximum perimeter protection in prisons, data centres, military bases, and critical infrastructure.

The 358 mesh design features a tight 76.2mm x 12.7mm aperture with 4mm steel wires, offering excellent visibility while delivering superior anti-climb and anti-cut performance — making it the preferred solution for high-security environments where safety cannot be compromised.

As a leading 358 high security fence supplier, we support projects of all sizes with reliable supply and export solutions.

358 fencing, also known as anti-climb or prison mesh fencing, is a high-security welded mesh system designed to prevent intrusion and vandalism.

The name “358” refers to its mesh configuration: 3-inch by 0.5-inch apertures (76.2mm x 12.7mm) made from 4mm diameter steel wires. This tight mesh structure prevents climbing and makes it extremely difficult to cut using conventional tools.

358 mesh fencing is widely used in high-security environments such as prisons, airports, military bases, and critical infrastructure where maximum protection is required.

The main difference between 358 fencing and 2D fencing lies in mesh size and security level.

358 fencing features a very tight mesh (76.2mm x 12.7mm), making it highly resistant to climbing and cutting. It is designed for maximum security applications such as prisons, data centres, and military facilities.

In comparison, 2D fencing systems such as 2D 656 or 2D 868 use larger mesh apertures and thicker wires, offering strong perimeter protection but with lower anti-climb performance.

Overall, 358 fencing provides the highest level of perimeter security, while 2D fencing is used for general or medium-security applications.

Typical specifications for 358 high security fencing panels are shown below. Custom sizes and finishes are available upon request.

✅ Anti-climb, anti-cut, and anti-vandal design
✅ Unobtrusive appearance with high visibility
✅ Compatible with electric fencing and detection systems
✅ Low maintenance and long lifespan
✅ Secure fixings prevent tampering or removal

358 mesh fencing is widely recognised as one of the most secure perimeter fencing solutions available in the market.

358 mesh fencing is commonly used for:

• Prisons and detention centres
• Military and government facilities
• Airports and seaports
• Data centres and server farms
• Power stations, substations, and water treatment plants
• Border control, customs, and security zones

✅ Ultra-Tight Mesh Aperture: 76.2mm x 12.7mm mesh size resists climbing and tool attacks.
✅ High Tensile Welded Steel Wires: 4mm thick vertical and horizontal wires.
✅ Superior Anti-Cut Performance: Resists bolt cutters and saws.
✅ Compatible with Detection Systems: Supports integration with CCTV, sensors, and electrified lines.
✅ Global Export Supply: Reliable international delivery across UK, Europe, Africa, the Middle East, and Asia.

This product conforms to European standards such as EN 10223. Learn more about European fencing standards (EN 10223).

Looking for alternative fencing systems or project-specific solutions? Explore our full range of fencing products or contact our team to discuss your requirements and receive a tailored quotation.

From steel coils to fencing systems: sourcing quality materials for global buyers, projects, and distributors.