LPS 1175 Security Rated fencing 

Jakoustic® Class 3 | Security Rated Fencing

Jakoustic® Class 3 is the only reflective acoustic barrier fence system certified to LPS 1175 C5 (SR3) and provides resistance to determined attempts at entry using a range of tools including battery powered tools. The double layer of timber boards results in a totally flat face making climbing the fence extremely difficult and is ideally suited to applications requiring a natural timber façade, where privacy is important, or for the containment of noise into or out from a site.

Jakoustic® Class 3 LPS 1175 C5 meets the guidance within ‘Physical Mitigation’ measures issued by the National Counter Terrorism Security Office (NaCTSO) to cover assets from view, making observation into a site more difficult. 

This noise barrier can also be certified to F1 and G1 under LPS 1175, offering protection against serious attempts at forced entry from a range of professional tools. Please contact our sales team for more information.

25 year service life guarantee

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Jakoustic® Class 3 Features

  • LPS 1175 C5 (SR3) approved   
  • Double layer of 34mm thick timber boards provide a high level of resistance to cutting
  • Also available as LPS 1175 F1 or G1 - speak to our sales team for more information
  • Secured by Design preferred specification
  • Anti-climb design with completely flat face allowing no foot or hand holds
  • Reflective acoustic barrier with up to 28dB* reduction in noise
  • Can accommodate changes in ground level or profile
  • Rota Spike® optional 
  • SR3 gates available


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Constructed from our unique Jakoustic reflective boards, using an interlocking "v" system. The special profile has been carefully developed to locate boards in such a way that eliminates gaps that sound could easily travel through.


Matching gates available

Jakoustic® Class 3 Panel Specification

Height (mm) Nominal Post Centres (mm)
Post Type (mm)
Overall Post Length (mm)
2500 2400 Universal I Beam 3250
2750 2400 Universal I Beam 2800
3000 2400  Universal I Beam 3300
3250 2400  Universal I Beam 3800

Posts Options

  • To suit fence height
  • Standard Finishes

  • Natural Jakcure® finish as standard
  • Document Downloads

    Download specification documents, drawings and case studies for this product


    About C5 (SR3) Fencing

    C5 fencing has been tested and certified to provide protection against more determined opportunistic attacks after undergoing the LPS 1175 test devised by LPCB. During testing, our fencing had to delay several attacks using category C tools such as a short axe, chisel, gas torch, and crow bar, each lasting at least 5 minutes, providing it with a rating of C5 under Issue 8, the equivalent of SR3 under Issue 7. Find out more about the range here which features welded mesh panels and an acoustic barrier.