Protek Elite Defender | LPCB SR2 (B3) High Security Fencing for Data Centres : Alexandra Security Limited

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B3/SR2 Rated Single-Skin High Security Fence System

Protek Elite Defender sets a new benchmark for high security fencing. Fully LPCB LPS 1175 B3 (SR2) certified, it delivers proven resistance against forced entry while remaining fast and practical to install.

Built to balance strength with practicality, it delivers dependable protection without the excess weight, complexity, or delays that often accompany high-security projects. With its single-skin panels and patented fixing system, Protek Elite Defender offers faster handling, adaptable installation (even on sloping ground), and a clean, professional finish. It’s a smarter, more efficient solution for securing data centres, utilities, government facilities, and other high-risk sites, keeping projects lean, compliant, and profitable.

Faster Installation, Lower Costs

For fencing contractors, every hour on-site counts. The Protek Elite Defender is designed with installation efficiency in mind. Single-skin panels and simplified fixings mean smaller teams can work confidently and complete projects faster. The system’s flexible slope adjustment eliminates the need for bespoke panel fabrication or lengthy surveys, cutting both labour and lead times.

This is high security fencing that makes complex projects simpler. Faster to install, easier to manage, and more profitable—without ever sacrificing performance, compliance, or reliability.

Certified LPCB SR2 (B3) Protection You Can Trust

Compliance matters as much as protection. The Protek Elite Defender meets both with confidence. As a fully LPCB SR2 fencing system tested to LPS 1175 B3, it’s certified to withstand sustained attack, delivering peace of mind for critical infrastructure and data centre fencing requirements.

Every feature—from its patented clamp bar and concealed fixings to its intelligent single-skin design—has been developed for minimal tampering risk and smoother inspections. Combined with reduced installation time, it helps projects stay on schedule, within budget, and fully aligned with LPCB and security specifications.

Designed for Data Centres and Sensitive Sites

Architects and specifiers looking for LPCB fencing that complements architectural design will appreciate the simplicity and balance of the Protek Elite Defender. Its refined mesh and unobtrusive fixings create a professional, modern appearance that enhances rather than overwhelms the surrounding environment.

Available in heights up to 5.2 metres and adaptable across uneven terrain, this SR2 fencing solution offers the strength to protect sensitive or publicly visible sites—without compromising on visual quality or design intent.

Backed by Proven Expertise and Reliable Supply

At Alexandra Security, we understand the responsibility that comes with securing critical infrastructure. The Protek Elite Defender reflects that understanding. Every detail—from precision-engineered panels to LPCB-certified reliability—has been developed to deliver lasting trust, installation efficiency, and ease of specification.

Choosing the Protek Elite Defender means choosing confidence. It’s a high security fencing system designed not just to perform, but to support your team from planning to completion—and beyond. Our team of fencing experts are ready to help you on your next high security project – contact them today.

Specification

Above Ground		Buried					No. of Fixings
Nominal Fence Height (m)	Panel Size Height x Width (mm)	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)
2.4	2,404 x 2,525	2.4	2,704 x 2,525	2,535	3,205	80 x 80	25	50
2.7	2,704 x 2,525	2.7	3,004 x 2,525	2,535	3,605	80 x 80	28	56
3.0	3,004 x 2,525	3.0	3,304 x 2,525	2,535	4,005	80 x 80	30	60
3.3	3,304 x 2,525	–	–	2,535	4,400	80 x 80	33	66
4.2	4,205 x 2,525	4.0	4,204 x 2,525	2,535	5,600	80 x 80	41	82
5.2	5,204 x 2,525	5.0	5,204 x 2,525	2,535	6,900	80 x 80	49	98

Subject To Change

More Info

Conforms to BS 1722-14: 2017

Fixings

Posts, Clamps and Fixings

Each post fixing points features double M8 security bolts to hold the adjoining mesh panels. The vertical clamp bar is the placed over the top and secured in place with a M8 security bolt. This system prevents the internal bolts from being tampered with, while the clamp bar provides strong resistance to attack.

Options

Cranked post extensions for mesh extensions / barbed wire.
Straight post extensions for anti-climb rollers.
Face fix (for flush against walls).
Base-plated (flush to front, back or centrally) available as special order for installation onto concrete and other hard surfaces.

Finishes

Product and Finish Standards

Security rated to B3/SR2 standard by the LPCB
Mesh panel wire manufactured to BS 4102 and galvanised to BS EN 10244-2:2001 class D. Welds conform to BS EN 10223-7.
Post material manufactured to BS EN 10210-2:1997 and galvanised to BS EN 10346:2009
Panels & Posts are galvanised before being powder coated to BS EN 13438:2005 (min 100 micron).

Downloads

B3/SR2 Security Fencing - Frequently Asked Questions

SR2 (or B3) refers to a security rating defined by the LPCB’s LPS 1175 testing standard. It confirms that a fencing system can resist a sustained, three-minute attack using a specific toolkit of hand tools. An LPCB SR2 fencing system like the Protek Elite Defender offers independently verified protection for sites where enhanced physical security is essential, such as data centres, utilities, and government facilities.

Unlike many double-skin or heavy-gauge systems, the Protek Elite Defender uses a single-skin panel design and a patented fixing system that makes installation faster and more efficient while still achieving full LPCB LPS 1175 B3 (SR2) certification. Its concealed fixings reduce tampering risks, and its adaptable design allows for use on sloping or uneven ground, saving time, labour, and cost without compromising security.

Yes. LPCB SR2 fencing such as the Protek Elite Defender is specifically engineered for data centre fencing and other critical infrastructure projects. It provides a proven level of protection against forced entry attempts, helping sites meet insurance, compliance, and risk management requirements. Its modern, refined appearance also makes it ideal for publicly visible or design-sensitive environments.

Absolutely. The system’s single-skin panels and patented fixing design make it faster and easier to install than other SR2 fencing. It is QAB system compatible, allowing experienced fencing contractors to complete installations efficiently, even with smaller teams—keeping projects on schedule and within budget.