358 Security Fencing HiSec Mesh | Perimeter Fence | Zaun Ltd

07. HiSec 358

Zaun’s HiSec 358 security fencing system uses the popular ‘358’ welded mesh configuration. The close mesh (76.2 x 12.7mm) formation provides anti-climb properties that ensure that it is almost impossible to get fingers within the apertures to scale and climb the fence without climbing aids. The attributes of the 358 mesh configuration make it an excellent solution for security applications.

Each panel is overlapped at the post and fixed and secured by a full-length clamp bar and secure fixing. This fixing method makes levering the panels away from the post very difficult. This ensures a quick and easy installation around the perimeter and protects against would-be intruders.

Due to our leading system technologies and in-house manufacturing, the 358 security mesh system is available up to 7.2 metres in height in a single panel.

To ensure we can supply a complete, single solution, pedestrian and vehicle access solutions have been carefully designed to address both aesthetic requirements and ensure the same security level of the mesh is maintained.

HiSec 358 mesh system is also ideal for integrating with CCTV, PIDs and security topping enhancements such as barb and razor coils, all of which can be supplied as part of a complete turnkey solution.

All of our HiSec systems conform to BS 1722 Part 14 for open mesh panels for quality assurance. Also available for LPS1175 A1 (SR1) – See HiSec SR1 for details.


All Zaun posts/panels/gates and painted auxiliary components (for example, clamp-bars, slide bolts etc.) benefit from a protective zinc layer and electrostatically applied polyester powder coating to BS1722 p16. Care is taken with pre-treatment to ensure sound adhesion between the zinc layer and the paint. In a UK C1 environment, as defined in ISO 12944 p2, this should ensure a useful life expectancy of the fence of at least 15-20 years. Life expectancy in all environments can be extended by the maintenance of the fencing with regular washing. Useful life will be reduced if the fencing is damaged. Any coating damage should be repaired to reduce the effect on useful life.

Enhanced painting systems such as marine coatings are also available for improved life expectancy in C2-C5M environments.

For a full list of colours, click here

Also available in GalZal®.

Posts & Fixings

The HiSec 358 perimeter security fencing system features a post and clamp bar configuration, providing a simple and easy installation method. Supplied with through bolts, washers and nuts and installed using either power or hand tools.

Note: For CPNI, the maximum change of direction is 45°. A flange is welded at the post at 45°, or a post with two welded flanges at 22.5°.

Sloping Ground

Panels can be stepped as required on the post. On steeper gradients, it is recommended that taller panels are either part-buried or additional posts are used. Panels can also be sloped within the tolerances of the panel to post fixing.

358 Security Fencing Variations

Posts are available in different lengths to accommodate panel heights and ground conditions. Additional variations are also available:

Matching 358 Mesh Security Gates

Pedestrian gates are single leaf 1.2m wide (or width to suit), framed in a 50mm x 50mm RHS with Zaun HiSec mesh clad to the front face of the gate frame, with slide latch. Gate supplied with 2 x suitable gate posts.

Vehicle access gates are double leaf (single leaf vehicle gates available) 3.0m wide (or width to suit), framed in 50mm x 50mm RHS, with Zaun HiSec mesh clad to the front face of the gate frame, with drop bolts and slide latch. Gate supplied with 2 x suitable gate posts.

HiSec 358 Security Fencing Samples Available

Samples of Zaun HiSec are also available upon request. To request your free sample, please click here.


Features and Benefits
  • 358 security tight mesh configuration offers no climbing aids
  • 76.2 x 12.7mm Mesh Pattern
  • Anti tamper fixings for a secure installation
  • Galvanised & polyester powder coated panels & posts
  • Full length clamp bars
  • Tested by the Ministry of Justice for use on HMP High Security Estates
  • Mitigates attack by hand and powered tools through tight mesh design
  • Single panel heights can be supplied of up to 7 metres
  • Also available in LPS1175 A1 (SR1) - See HiSec SR1 or with V-Beam for extra rigidity (see HiSec Profile)
  • Available either bolt down, in ground or on wall post options
  • 3 different vandal and tamper-proof fixing options available (spider clip, single fix or dual fix)
  • Secured By Design approved
  • A wide variety of fence toppings can also be supplied (see Fence Toppings)
  • Matching pedestrian and vehicle gates are also available
Download To download our HiSec 358 datasheet, please click on the link below; To download our change of direction detail, please click on the link below; To download our Q40 specification sheet, please click on the link below; To download our standard colour list, please click on the link below; To download our brochures, please click on the link below;
Height 1270, 1829, 2007, 2438, 2997, 4204, 5207mm (Note: Additional heights up to 7.2 metres available upon request)
Panel Width 2515mm
Mesh Size 76.2 x 12.7mm
Wire Diameter 4mm Verticals x 4mm Horizontals
Top Edge Projection Minimal Projections
Post Size 60 x 60 / 80 x 40 / 100 x 50 / 120 x 60 Dependant on height
Clamp Bar Size 40 x 5mm
Post Centres 2440mm
Fixing Centres Max. 400mm
Fixings Through Bolts, Nuts & Washers
Panel Weight 8Kg per sqm
  Note: Zaun manufactures 358 from cut to length line wires; the panels are not cropped.  They are supplied as standard with short protruding wires on top and bottom. If flush panels are required, this should be requested at the time of enquiry.

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Certifications and Approvals