358 Prison Mesh Fencing for High-Security Sites
Fencepoint supplies Armex 358 prison mesh fencing to contractors and construction companies across the UK. A high-security, anti-climb perimeter solution for prisons, schools, airports and industrial sites — available in green and black with fast nationwide delivery.
Also known as anti-climb mesh or weldmesh 358, the Armex 358 system takes its name from its characteristic small aperture — 76.2mm x 12.5mm (3″ x ½”) — which prevents footholds and makes it one of the most specified high-security fencing systems in the UK. Whether you’re securing a new development, replacing an ageing perimeter or tendering for a fencing contract, our panels and posts are held in stock and ready to ship.
Common applications
Armex 358 is the go-to choice where maximum perimeter security is required. Common uses include:
- Prisons and secure detention facilities
- Schools, colleges and university campuses
- Airports and transport infrastructure
- Data centres and utility sites
- Industrial and manufacturing sites
- Public sector and government buildings
Why choose Armex 358 prison mesh fencing?
- Anti-climb aperture design — The 76.2mm x 12.5mm aperture provides no meaningful foothold or fingerhold, making Armex 358 one of the most effective anti-climb fencing systems available. Widely specified by architects and security consultants for high-risk perimeter applications.
- Rigid, tamper-resistant construction — Heavy-gauge 4mm wire welded at every intersection creates an exceptionally rigid panel that resists cutting, bending and impact. Anti-tamper fixings secure each panel to the post with tamper-proof bolts, making unauthorised removal extremely difficult.
- Compatible with security add-ons — Armex 358 accepts a full range of security enhancement options including barbed wire arms, razor wire, electric fence outriggers and CCTV brackets — making it adaptable to almost any security specification.
- Corrosion resistant and low maintenance — Galvanised to BS EN ISO 1461:2022 standard and powder coated in Green (RAL 6005) or Black (RAL 9005). Built for long-term outdoor performance with minimal maintenance requirements.
- Range of heights available — Supplied in standard heights from 1.8m to 3.0m to meet different security levels and planning requirements, including high-security 3m installations for maximum-risk perimeters.
Armex 358 — technical specifications
- Aperture size: 76.2mm x 12.5mm (3″ x ½”)
- Wire diameter: 4mm horizontal and vertical
- Available heights: 1.8m, 2.0m, 2.4m, 3.0m
- Colours: Green (RAL 6005), Black (RAL 9005)
- Finish: Galvanised + powder coated
- Standard: BS EN ISO 1461:2022
Recent projects
See how Fencepoint has supplied 358 prison mesh fencing on recent commercial and industrial projects across the UK.
Art Gallery Service Zone
22m Armex 358 at 3.0m — anti-climb security
Frequently asked questions
What is 358 prison mesh fencing?
358 prison mesh fencing takes its name from its aperture dimensions — 3″ x ½” (76.2mm x 12.5mm). The small aperture prevents footholds and fingerholds, making it extremely difficult to climb. It was originally developed for high-security prison perimeters but is now widely specified across schools, airports, data centres and industrial sites.
What is the difference between 358 mesh and V mesh fencing?
358 mesh is a high-security, small-aperture welded panel designed primarily to prevent climbing and cutting. V mesh (Armex 45) is a lighter, more cost-effective profiled mesh suited to commercial boundary applications where anti-climb is less critical. If security is the primary concern, 358 is the correct specification.
Do you supply 358 mesh fencing nationwide?
Yes — Fencepoint supplies Armex 358 prison mesh panels, posts and fixings to contractors and construction companies across the UK. We hold stock for fast delivery and can turn around orders quickly to suit programme requirements.
Can I order 358 mesh fencing for supply only?
Yes — we are a supply-only fencing merchant. We supply panels, posts and fixings to contractors who carry out installation. Fill in the enquiry form and we will get back to you with a quote promptly.
Get a fast quote
Tell us what you need and we’ll come back to you quickly. Fill in the form, or call us directly on 01592 772 455.