01.
Full assembly test
The standard tests doorsets as complete assemblies. Leaf, frame, hinges, locking system, and any approved accessories all sit under one rating. Not the leaf in isolation. Not the lock alone.
LPS 1175.
SR2 to SR4, certified.
The Loss Prevention Certification Board standard for forced-entry resistance. Three Fort doorsets are certified to LPS 1175 Issue 8: FORT002 LP2S at SR2, FORT003 LP3S at SR3, Fort Vault 004 FB4 at SR4. Every one of them listed on RedBook Live, public for anyone to verify.
LPS 1175 sets attack-resistance ratings for security doorsets, shutters, and other building components. Each rating corresponds to a specific attacker profile, defined by the toolkit they have access to and how long they’re prepared to work on getting through.
It’s the standard UK specifiers cite for high-security projects across MOD, data centres, utilities, embassies, and counter-terror. Procurement teams reference it because it’s published, audited, and the certificates are public on RedBook Live. Fort Engineering holds three LPS 1175 certifications, one product per rating from SR2 through SR4.
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Methodology
How LPS 1175 is tested.
02.
Defined toolkit per rating
Each SR rating has a specified toolkit. SR1 covers opportunist attempts with body force. SR4 covers heavy hand tools, lightweight power tools, and longer attack time. The standard runs up to SR8.
03.
Time-to-breach window
Testing measures how long the assembly resists the defined attack. The attacker has a fixed maximum total time, and a separate fixed working time within that window.
04.
LPCB-approved facility
Tests run at LPCB-approved labs only. Results are listed publicly on RedBook Live and anyone can verify a Fort certificate by its number. No need to ask us first.
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Certified products
Three products. Three ratings.
All three are single-leaf hinged security doorsets certified to LPS 1175 Issue 8. The specifications below are taken verbatim from the LPCB certificate appendices. Sizes shown are the certified envelope, not the maximum Fort can fabricate.
01 / Product
FORT002 LP2S
Cert 1607b/01
Single leaf, inward opening hinged doorset. SR2 rated for buildings facing deliberate attack with body force and basic hand tools.
Size range
1.7 – 2.5m H × 0.65 – 1.3m W
Lock system
ISEO FIAM 678G, three-point morticed
Cylinder
ISEO R6 Plus
Operating device
Key and lever handle, both faces
Accessories
Door viewer (optional)
02 / Product
FORT003 LP3S
Cert 1607c/01
Single leaf, inward opening hinged doorset. SR3 rated for buildings facing experienced attackers with extended hand toolkits and lightweight power tools.
Size range
1.7 – 2.5m H × 0.65 – 1.3m W
Lock system
ISEO FIAM 678G, three-point morticed
Cylinder
ISEO R6 Plus
Operating device
Key and lever handle, both faces
Accessories
Door viewer (optional)
03 / Product
Fort Vault 004 FB4
Cert 1607d/01
Single leaf hinged doorset, inward or outward opening. SR4 rated for high-threat sites facing determined attacks with heavy hand tools and power tools.
Size range
1.8 – 2.5m H × 0.8 – 1.4m W
Lock system
ISEO/MOTTURA FIAM X1R with Defender 94750 cylinder guard, multi-point morticed
Cylinder
ISEO R6 Plus double europrofile (key/key)
Operating device
Access control with key override and lever handle, both faces
Accessories
Dorma ED250 automatic door opener (optional)
Worth noting: Fort Vault 004 FB4 also holds LPS 1056 fire integrity certification and FB4 ballistic certification. It’s the only product in our range carrying all three. Useful for MOD, embassies, and data-centre critical rooms where fire, forced entry, and ballistic all sit on the same spec sheet.
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Specifying
Which SR rating for the project?
The right rating depends on the threat assessment for the site, the insurance specification, and what the procurement team has been briefed against. Below is the typical mapping we see in real specifications, but it’s not a substitute for a proper risk assessment.
SR2
FORT002 LP2S
Attack profile: Deliberate attempt with body force and basic hand tools (chisel, screwdriver, pliers, claw hammer). Short attack window, no power tools.
Typical applications: Education entrance and lockdown doors, lower-risk commercial frontages, housing schemes where Part Q minimum isn’t enough on its own, healthcare general-access doors.
SR3
FORT003 LP3S
Attack profile: Experienced attacker with extended hand toolkit and lightweight power tools (cordless drill, jigsaw, bolt croppers). Longer attack window.
Typical applications: Healthcare drug stores and higher-risk wards, data centre perimeter entries, utility substations, commercial premises with serious crime exposure, sensitive utility cabinets.
SR4
Fort Vault 004 FB4
Attack profile: Determined attacker with heavy hand tools, lightweight power tools, longer attack time. The civilian high-threat tier.
Typical applications: MOD List X and List N projects, data centre critical rooms, embassies, high-net-worth residential safe rooms, utility sites operating under CPNI guidance, nuclear ancillary sites.
If you’re not sure which rating applies, send us the spec or a brief of the threat profile. We’ll point you to the right product, or tell you straight if LPS 1175 isn’t the right standard for what you’re describing.
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Documents
The actual certificates.
Each Fort LPS 1175 certificate is a separate listing on RedBook Live. Click verify to confirm directly with LPCB. PDFs are sent on request because we’d rather route you to the current revision for the product you’re specifying.
01
LPS 1175 SR2 – FORT002 LP2S
Cert 1607b/01
02
LPS 1175 SR3 – FORT003 LP3S
Cert 1607c/01
03
LPS 1175 SR4 – Fort Vault 004 FB4
Cert 1607d/01
Need a project-specific certificate?
Send us the product reference and project brief, we’ll send the current cert revision the same working day.
Specifying LPS 1175 on a live project?
Fort manufactures, the customer brands sell. CAD blocks, BIM objects, NBS clauses, and project-specific certificates are routed through whichever brand fits the project type. Pick yours.