High Security · Risk-based solutions

Perimeter security and CER fencing at three protection levels based on risk assessment

Perimeter security is the physical protection of an area with fences, gates and barriers, and its protection level is determined by the site's risk assessment. Pur-ait supplies perimeter security at three protection levels, from LPS 1175 certified fences to ISO 22343 crash-rated gates, including for sites covered by the Finnish CER Act. Design, manufacturing in Suutarila, Helsinki, installation and maintenance all come from one place.

Assess your risk level Perimeter security levels

Protection levels

Three levels, one partner

Perimeter security level 1, low-risk sites
1

Perimeter security level 1, low-risk sites

A solid baseline. A reliable basic solution for sites that need a clear boundary and access control. Can be upgraded to a higher level as requirements grow.

Mesh size 40×40 mmWire diameter 3 mmHeight 2000-3000 mmAluminium or galvanised steel

Products

  • Chain-link fence
  • Protector and Classic sliding gates
  • Swing gate (Swing)
  • Carousel full-height turnstile
  • Boom barriers

Typical sites

  • Production facilities
  • Warehouses
  • Logistics centres
  • Distribution terminals
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Perimeter security level 2, critical risk level
2

Perimeter security level 2, critical risk level

Reinforced protection. For when a basic fence is no longer enough. Withstands significantly more stress. A natural path towards even higher protection.

Mesh sizes 50×200 and 35×200 mmWire diameter 8/6/8 mmHeight 2000-5000 mmAnti-dig protection 50 cmGalvanised, hot-dip galvanised and RAL

Products

  • 2D panel fence 8/6/8
  • Protector sliding gate
  • Speed bi-folding gate
  • Swing gate

Typical sites

  • Public institutions
  • Hospitals
  • Courts
  • Energy plants
  • CER sites
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Perimeter security level 3, high risk level
Highest level
3

Perimeter security level 3, high risk level

Maximum protection. Our highest level of fence protection. Designed for sites where the protection must withstand professional break-in tools. The mesh is so dense that it cannot be gripped with fingers or ordinary tools.

Mesh size 76.2×12.7 mmWire diameters 4-6 mmHeights 2000-6000 mmAnti-climb constructionLPCB LPS 1175 Issue 8 A1 and B3

Products

  • 358 High Security fence
  • Betafence Securifor
  • Palifor (crash-tested)
  • Speed bi-folding gate
  • Crash-rated gates

Typical sites

  • Data centres
  • Power plants
  • Water utilities
  • Telecommunications infrastructure
  • CER-critical sites
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Risk assessment

Assess the risk level of your site

Answer three questions to get a recommendation for the right perimeter security level.

🏛

Is your site covered by the CER Directive?

Energy, water supply, transport, telecommunications, health, banking, public administration...

Yes Level 2-3 likely
No Level 1 may be sufficient
⚡

Does the site contain critical data or infrastructure?

Data centres, power plants, water utilities, telecommunications nodes...

Yes Level 3 recommended
No Level 1-2 may be sufficient
🔒

Has unauthorised access been attempted before, or is the site under a specific threat?

Previous intrusion attempts, targeted threats, a high-risk location...

Yes Level 3 and additional surveillance
No The basic level is likely to be sufficient

Once the risk level has been assessed, we have the solution.

Book a free 30-minute site survey. We help you choose the right level.

Book a site survey

Finnish CER Act 310/2025

The law requires it. We help you comply.

The CER Directive requires entities that are critical to society to protect their premises physically. If your organisation provides an essential service such as energy, water, transport or telecommunications, you must ensure adequate protection.

Pur-ait High Security solutions are designed for environments where the role of physical protection is to delay and prevent unauthorised intrusion.

The Act covers 11 sectors

Energy
Water supply
Transport
Digital infrastructure
Health
Banking
Public administration
Food
Space
Waste water
Financial market infrastructure

Is your site covered by the CER Directive? Let us find out together.

Standards

ASTM F2781 / LPS 1175 / EN 1627

The three key international security fence standards and their main differences in test methods, classification and official status.

ASTM F2781
American standard for testing security fence systems. It assesses how long it takes to get through the fence with various hand-operated tools and attack levels. Ratings Low, Medium and Aggressive
LPS 1175: Issue 8
Standard developed by LPCB/BRE for testing forced entry resistant building components and security structures. It measures the ability of a product to delay a determined intruder using predefined tools. Letter A-H = threat level, number = minimum delay in min. For example B3 = category B tools, 3 min delay. Formerly SR classification.
EN 1627: 2021
European standard for determining the burglar resistance of doors, windows and facade structures. Not suitable for fences and gates. Resistance classes RC1-RC6.
Intruder type
BurglarTerrorist
BurglarTerrorist
Burglar
Test tools
Coverage
Aggressiveness
Coverage
Aggressiveness
Coverage
Aggressiveness
Tool restrictions
✕
✕
✓
Delay time (min)
Class
Threat level
Tools
LOW
Low
Hand
MED
Medium
Hand
AGG
High
Hand
Class
Min
Test
A1/SR1
1
min
10
min
B3/SR2
3
min
15
min
C5/SR3
5
min
20
min
Class
Min
Test
RC 2
3
min
15
min
RC 3
5
min
20
min
RC 4
10
min
30
min
Specific standard for fence systems
✓
✕
✕
Standard approved by authorities
✓
✕
✓

The comparison is shown up to the LPS 1175 Issue 8 maximum level C5/SR3. The standard includes higher SR classes all the way up to H20/SR8, which use increasingly aggressive tools.

Crash ratings

Vehicle impact protection standards explained

Products that protect against vehicle impact are rated in two ways. One is the American ASTM F2656 standard, which has an older K designation and a newer M designation. The other is the international ISO 22343-1 code. Both are explained below at a glance.

ASTM F2656
American crash standard. The same resistance is marked in two ways, the old K rating and the newer M rating. Both mean the same performance.
Old → New
Vehicle
Impact speed
K4M30
6.8 t
48 km/h
K8M40
6.8 t
64 km/h
K12M50
6.8 t
80 km/h
P rating, how far the vehicle travels beyond the barrier
P1≤ 1 m
Very high protection, the vehicle stops almost at the barrier
P21–7 m
Good protection level
P37–30 m
Moderate protection level
P4over 30 m
Weak protection level
ISO 22343-1
International crash standard. Performance is written as a single code that gives the details of the test. The code is read one part at a time.
V / 7200[N2A] / 80 / 90 : 1.1 / 37.7
VVehicle impact test
7200Test vehicle mass, 7200 kg
[N2A]Vehicle class and type used in the test
80Impact speed, 80 km/h
90Impact angle in degrees, 90° = head-on impact
1.1Vehicle penetration beyond the barrier, 1.1 m
37.7Debris dispersion distance, 37.7 m
How to read a rating, an example (the same logic applies to both standards)
ASTM F2656 K / M rating
M30
old designation K4
6.8 t
vehicle mass
48 km/h
impact speed
Penetration ≤ 1 m · class P1
ISO 22343-1 V / 7200[N2A] / 80 / 90 : 1.1 / 37.7
N2A
vehicle class (V = crash test)
7.2 t
test vehicle (7200 kg)
80 km/h
head-on impact, 90°
Penetration only 1.1 m

Complicated? Leave it to us.

Among all the K, M, P and ISO ratings, only one thing really matters, which is that your site gets the right protection level. Pur-ait assesses the threat, interprets the standards and dimensions the solution for you.

Perimeter security in practice, in-house production in Suutarila, Helsinki

Perimeter security means protecting the outer boundary of a site so that unauthorised access is prevented or delayed for long enough. Pur-ait designs, manufactures, installs and maintains perimeter security itself, and production is in Suutarila, Helsinki.

Perimeter security is a complete system, not just a fence

In physical perimeter security, fences, gates, barriers and access control work together. The fence defines the area, delays the intruder and directs traffic to controlled access points. Each protection level has its own fences and gates. At the higher levels, anti-climb protection, anti-dig protection and compatibility with perimeter intrusion detection systems are added.

Delay is sized according to response time

The delay required of the fence depends on the response time of the rest of the security system. The longer the response time, the more delay is required of the fence. The highest level fences have been tested to the LPS 1175 standard, which measures how long a structure withstands determined intrusion with specified tools.

Critical perimeter security and the Finnish CER Act

Critical perimeter security means protecting sites that are vital to the functioning of society. Examples include energy production, water supply, data centres and telecommunications. For an entity covered by the Finnish CER Act, physical protection is part of the risk assessment and resilience plan required by the Act. Perimeter security must then provide perimeter barriers that delay or prevent intrusion, as well as compatibility with surveillance and access control systems.

The risk assessment determines the protection level

The right level is chosen on the basis of the risk assessment, not the budget. The assessment establishes what is being protected at the site, what an intrusion would lead to and what kind of threat is likely. An insurance company or an authority may also require a certain minimum level. The level can be raised later. A level 1 fence can be reinforced, for example by increasing the height of the structure or strengthening the posts, when the threat changes. The differences between the levels are explained in more detail in our guide to choosing a perimeter security level (in Finnish).

One supplier from design to maintenance

Pur-ait manufactures its fences and gates in its own production facility in Suutarila, Helsinki. Design, manufacturing, installation, maintenance and spare parts all come from one place, so a single supplier is responsible for the perimeter security of the site throughout its life cycle.

Book a free 30-minute site survey and we will assess the risk level of your site and the perimeter security level that suits it.

Frequently asked questions

The CER Directive and perimeter security

Answers to the most common questions about the Finnish CER Act, protection levels and certificates.

What is a CER fence?
A CER fence is a fence designed for the physical protection of critical infrastructure. It prevents unauthorised access to sites that are vital to the functioning of society, as required by the Finnish CER Act. CER stands for Critical Entities Resilience, and the Act is based on an EU directive. At a critical site the fence is dimensioned to withstand professional intrusion, and it is combined with gates and detection into a layered whole.
What does the CER Directive mean?
CER (Critical Entities Resilience) is EU Directive 2022/2557, which requires critical entities to strengthen their resilience and to protect their premises physically. The aim is to protect the essential services of society against natural hazards, accidents, hybrid threats and technological risks.
When does the CER Act enter into force in Finland?
The Finnish national CER Act (Act on the Protection of Critical Infrastructure and Improving the Resilience of Society, 310/2025) entered into force on 1 July 2025. It implements the EU CER Directive in Finland and sets out the national procedures, actors and roles.
Which sectors does the CER Act cover?
The CER Act covers 11 critical sectors, namely energy, water supply, waste water, transport, digital infrastructure, health care, banking, financial market infrastructure, public administration, food and space. If your organisation provides an essential service in these sectors, you will most likely need to prepare for CER obligations.
What does the CER Act require of physical protection?
A critical entity must implement technical, security and organisational measures to ensure its resilience. The plan must describe, among other things, the protection of the premises and the infrastructure located there, the prevention of incidents and personnel security. The plan must be drawn up within 12 months of the completion of the risk assessment.
What is LPS 1175 and how does it differ from EN 1627?
LPS 1175 (LPCB/BRE) measures the ability of a structure to delay a determined intruder using predefined tools. The rating consists of a letter (A-H, threat level) and a number (1, 3, 5, 10, 15 or 20 minutes of delay). EN 1627 applies to doors, windows and facade structures and is not suitable for fences and gates. ASTM F2781 and LPS 1175 are suitable for fence systems.
Which perimeter security level is right for our site?
The right level depends on the risk assessment of the site. Level 1 (chain-link fence) suits industry and logistics, level 2 (panel fence 8/6/8) suits public institutions and some CER sites, and level 3 (358 High Security, Betafence Securifor mesh fence and Palifor palisade) suits data centres, power plants and water utilities. Pur-ait helps you choose the right level during a site survey.
Who is responsible for supervising CER obligations?
The Ministry of the Interior provides overall steering, the sector ministries identify the critical entities in their own sectors, and the supervisory authorities (including the Energy Authority, Traficom, Fimea, the Finnish Food Authority and Tukes) supervise compliance with the obligations. The National Emergency Supply Agency supports the entities, and the Government Situation Centre acts as the central point of contact for incident notifications.
Within what time must a critical entity carry out a risk assessment?
A critical entity must draw up a risk assessment within 9 months of being identified as a critical entity. The assessment must be updated when necessary and at least every four years. A separate risk assessment is not required if an equivalent assessment has already been made under other legislation.
What must be done in the event of an incident?
A critical entity must notify the supervisory authority and the Government Situation Centre of an incident. The initial notification must be made within 24 hours of detecting the incident and a detailed report within one month. The supervisory authority confirms receipt of the notification and informs the entity of any support measures.
What do LPS 1175 ratings A1 and B3 mean in practice?
A1 means that the product withstands category A tools (basic hand tools) for at least 1 minute. B3 withstands category B tools (including hand-held power tools) for at least 3 minutes. The Pur-ait 358 High Security, Betafence Securifor and Palifor product families include solutions rated both A1 and B3.

Site survey

Is your site covered by the Finnish CER Act?

Book a 30-minute site survey. We will tell you which protection level suits your site, with no obligation.

Book a site survey

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