A high security delay rated durable fence system engineered to slow intrusion attempts and protect critical sites where perimeter breaches cannot be tolerated. Recognized as the industry-standard 358 fence and anti-climb 358 mesh fencing solution, this ultra-durable fence operates as a maximum security fence system engineered for uncompromising perimeter defense.
A1 ArmorMesh Level IV is a high-security, delay-rated, durable fence system designed for environments where perimeter protection is non-negotiable. Engineered and tested in accordance with ASTM F2781-15, the high security fence system is built to resist aggressive cutting tools and deliver over 6 minutes of intrusion delay against aggressive tools. This delay creates critical response time for security teams to detect, assess, and act before a breach can occur.
The high security perimeter fencing system combines high-strength welded wire fence panels, reinforced structural framing, and anti-tamper fastening methods to form a robust physical barrier while maintaining clear visibility for surveillance systems and perimeter patrols. A1 ArmorMesh Level IV can also be integrated with additional deterrent components such as concertina razor wire or wall spikes, supporting a layered perimeter approach where deterrence, delay, and response work together.

Watch A1 ArmorMesh Level IV under ASTM F2781-15 test conditions, demonstrating how measurable delay translates into real response time.
This rigorous testing proves why A1 ArmorMesh Level IV is the definitive 358 fence and high security fence system for mitigating forced entry. When protecting critical assets, investing in a certified durable fence ensures your facility is backed by a true maximum security fence engineered to withstand sustained physical attacks.

A1 ArmorMesh Level IV is tested to ASTM F2781-15 standards, providing verified resistance against aggressive cutting tools and creating critical delay during attempted breaches.
The system delivers 6+ minutes of resistance against advanced cutting tools and significantly longer against medium grade tools, creating valuable response time during attempted breaches
With a striking Visibility Index of 41.33% the mesh configuration maintains strong visibility across the fence line, allowing cameras and patrol teams to quickly identify suspicious activity and respond when needed.
Can be integrated with concertina razor wire, wall spikes, or anti-personnel deterrent systems, strengthening the perimeter and discouraging climbing or breach attempts
Everything you need to plan with confidence to secure your perimeter. Brochures, specifications, and key product information for Durable Fence, all in one place. Download detailed architectural drawings, CAD files, and engineering specifications for our astm f2781 tested 358 fence systems to specify your high security perimeter fencing with complete accuracy.

<p>Data centers face targeted intrusion risks where cutting tools and coordinated access attempts are a real concern. A delay rated fence combined with topper integration helps slow breaches, giving security systems and on-site teams the time needed to respond.</p>


Manufactured from high quality steel with hot dip galvanization and protective coatings, ensuring strong resistance to corrosion, weather exposure, and demanding site conditions.
Designed to adapt to varying site conditions, offering flexibility in layout, height, and integration with additional security components to meet specific project needs