PROTEX 3 C5 (SR3) HIGH SECURITY FENCING
ProtEx 3 C5 (SR3) is a double-skinned expanded metal mesh high security fencing system designed to provide robust perimeter protection for sites where risk, compliance and asset protection are critical.
- Certified to LPCB LPS 1175 C5: Issue 7 (SR3)
- Double skinned expanded metal mesh construction
- Unique post, stringer and mesh design
- Anti-climb properties with no finger or footholds
- Suitable for undulating ground and slopes up to 30 degrees

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ProtEx 3 C5 (SR3) is a high security fencing system certified by the Loss Prevention Certification Board under LPS 1175 Issue 7 to C5 (SR3) level.
Manufactured in the UK, the system features a double-skinned expanded metal mesh, 1576, with a unique post and stringer configuration. This design is engineered to significantly delay and deter aggressive attack, while maintaining excellent visibility and airflow.
The expanded metal mesh profile provides inherent anti-climb performance, offering no viable finger or footholds, making it suitable for high-risk environments where perimeter integrity is essential.
AREAS of application
ProtEx 3 C5 (SR3) high security fencing is suitable for installation on uneven ground and gradients of up to 30 degrees. It is supplied as a complete rated system as it can include compatible pedestrian and vehicle gates.
Tough, durable and insurance-approved, it provides superior perimeter protection for sites of critical importance, including:
- Data centres
- Utility and energy sites
- Water and wastewater facilities
- Critical national infrastructure
Proven Performance
We supported Severn Trent, a major water company, with an LPS 1175 C5 (SR3) security fencing solution for three of its sites. Working in partnership with the company and a contractor, we were involved from the initial concept of the project through to the end delivery. You can read more about the high security fencing and gates we manufactured, delivered and installed here.
lps 1175 security ratings
A selection of ExMesh Engineering products are certified to LPS 1175, the recognised UK standard for measuring resistance to forced entry.
Ratings like A1, B3 and C5 define both the duration of attack resistance and the category of tools used during testing. These classifications help ensure the fencing system selected is appropriate for the threat level and operational risk of the site.
Understanding the correct rating is essential when specifying perimeter security for high-risk environments.
Further information is available at www.redbooklive.com.





