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Enquire About Protek® 358 Clamp – Prison Mesh Security Fencing

Our experienced staff are always ready to help and share their personal expertise to guide you to the right perimeter security solution.

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    Prison Mesh Flat Panel Security Fence System

    Protek 358 security mesh is designed to be almost impossible to climb, due to the narrow apertures of the mesh preventing any intruder gaining a foothold, while still retaining a good level of visibility and an aesthetically pleasing appearance.

    Protek 358 prison mesh fencing still maintains a good level of visibility through the fence, while the tightly spaced wire mesh and multiple welded intersections on the panels are incredibly hard to penetrate or cut using standard cutting tools, providing high rigidity and strength from attack. Every 358 fencing panel is overlapped with a full-height clamp bar with multiple anti-tamper fixings, forming a fence line that provides a very high level of security.

    Due to the very high level of security, Protek 358 fencing is used extensively by the Ministry of Defence around high security facilities. It is also ideal for use on industrial sites and data centres, as well as security fencing for prisons, or any area where an imposing high security fence is needed. For extra security, a variety of fence toppers can also be added, such as our rotating anti-climb fence spikes.

    Available In Multiple Sizes And Colours

    Protek 358 prison mesh fencing is available in heights from 1.8m, up to 3m. As the height of the 358 fence gets taller, the size of the supporting posts is increased to ensure maximum stability. All our of 358 mesh panels are galvanised to provide long-lasting weather protection, and can also be powder coated to over 1000 RAL colours, with common colours held in stock for fast dispatch.

    Complete Your System With A Matching Gate

    We can either manufacture Protek 358 security gates to your bespoke size, or for quick lead time we stock a comprehensive range of singles and doubles in various heights and widths. Hinges are inverted on all gates to prevent lift off.

    One Of The UK’s Leading Metal Boundary Fencing Suppliers

    Alexandra Security is a leading supplier of mesh fencing in the UK, and our high quality perimeter fencing is made to last. Each fence is supplied in a galvanised finish for long term weather protection, and if required a polyester powder coat finish to a colour of your choice can be applied to give extra protection and an improved aesthetic appeal.

    Nominal Fence Height (m) Panel Size Height x Width (mm) Post Centres (mm) Overall Length of Post (mm) Post Size (mm) Ends/Inters (1 Clamp) Corners (2 Clamps)
    1.8 1,833 x 2,515 2,440 2,450 60 x 60 7 14
    2.1 2,138 x 2,515 2,440 2,800 60 x 60 8 16
    2.4 2,442 x 2,515 2,440 3,100 60 x 60 9 18
    3.0 3,001 x 2,515 2,440 3,750 80 x 40 11 22

    Subject To Change

    More Info


    Posts, Clamps and Fixings

    The posts and full length clamp bars that Alexandra Security Limited offers provide a fixing system which secures the panels but allows for variations. The system is easy to install and allows the panels to be stepped, helping the fence line to follow the contours of the ground. With the vandal resistant security fixings this post and clamp system.


    • Threaded insert posts available
    • System is available in a galvanised finish using galfan panels
    • Refer to Anti-Climb section on pages 114-119 of our brochure for more options for this product


    Product and Finish Standards

    • Mesh panel wire manufactured to BS 4102 and galvanised to BS EN 10244-2:2001 class D, weld strength is 75% of the minimum tensile strength of the wire (tensile range 540-690 N/m2)
    • Post material manufactured to BS EN 10210-2:1997 and galvanised to BS EN 10346:2009
    • Panels & Posts are powder coated to BS EN 13438:2005 (min 100 micron)