Samson samson defender extreme 1 sr2 steel security rated steel doorsets

SR2 Security Rating & Defender Extreme-1 Features

The Samson Defender Extreme-1 is a single leaf security steel doorset offering B3 (SR2) certified security rating. Independently tested and certified by BRE to LPS1175: Issue 8 requirements, it delivers robust protection against sophisticated break-in attempts—meeting a key benchmark for UK high security external doors.

SR2 Rating: What Does it Mean?

SR2 is the industry shorthand for LPS 1175 Security Rating 2 (B3), part of the Loss Prevention Certification Board (LPCB) standards. An SR2 steel doorset must withstand a sustained attack using a range of hand tools for a confirmed minimum time (often 3 minutes). This independent third-party certification is crucial for commercial, public and high-risk facilities that demand proven physical protection against criminals using burglary tools such as bolt cutters, heavy-duty screwdrivers, claw hammers, and pliers.

Many UK insurers, architects and contractors require SR2-rated doors as a minimum for external security points, access control barriers, and sensitive areas in offices, retail, warehousing, healthcare, education, utilities and public sector buildings.

Door Features & Options

• Made to measure, double skinned steel leaf
• Inward or outward opening options
• Manufactured entirely in the UK by Metador
• Certified to LPS1175 Issue 8: SR2/B3 (also available in SR3/C5 and SR4/D10 ratings)
• Maximum single leaf width: 1460mm | Max height: 2500mm (3440mm with top transom)
• Steel fixing sub-frame always factory fitted, complete with selected hardware and locking
• Extensive range of locks, latches, handles, panic hardware, closers and stays, all approved to the required LPS 1175 security standard
• Powder coated finish – any RAL colour, with 250 key standard options for rapid delivery; marine grade finishes available for coastal sites
• External use is standard, but also suitable for internal applications
• Optional thresholds available for various site requirements
• SR2 format options: louvered panel inserts for ventilation, fire rated up to 120 minutes
• Solid, glazed, or louvered side and over panels available, rated within LPS1175 B3 as required

Why is Steel & SR2 So Important?

• Steel’s inherent strength and resilience make it superior to timber or composites for resisting forced entry—a key factor in meeting UK security, insurance, and life safety requirements.
• LPS1175 SR2 doors are recognised throughout the UK as a foundation for meaningful security in vulnerable or high-value premises, often specified by government, police and insurance bodies.
• LPCB certification guarantees the product has passed exhaustive bench and physical testing, giving peace of mind and often enabling lower insurance premiums.
• Modern steel doors also offer advanced finish and fire safety options for both practicality and aesthetics.

Choose Defender Extreme-1 for proven, UK-certified steel security you can trust—tailored to your specification and built for lasting protection.

Applications & Relevant Market Sectors

SR2 security-rated steel doors provide robust protection and peace of mind across a wide range of building types and security-critical environments. These high-integrity doors are specified not only for superior burglary resistance but for their exceptional manufacturing quality, advanced locking systems, and market-leading durability—factors that significantly extend lifetime value when compared to lower-specification products.

Where Are SR2 Doors Typically Used?

• Commercial properties – offices, retail shops, showrooms, banking premises, and data centres where secure access points are essential to protect staff, assets, and sensitive information.
• Industrial facilities – warehouses, factories, logistics hubs, utilities, and energy providers, where external entry points are vulnerable and need verified attack resistance.
• Residential developments – individual homes, apartment blocks, and gated communities seeking enhanced entry protection, especially for plant rooms, bike stores, or storage buildings.
• Public sector buildings – schools, universities, healthcare facilities, and community centres, where safeguarding public, staff, and high-value equipment is a priority.
• Critical infrastructure – government buildings, water treatment plants, telecom sites, substations, and service yards, where failure of physical security can have wide-reaching consequences.
• Pharmaceutical & storage – buildings storing high-value, hazardous, or regulated goods that must meet strict insurance or statutory security standards.
• Leisure & sports venues; hospitality – stadiums, gyms, hotels, and entertainment complexes requiring robust barrier protection at staff, back-of-house, and plant areas.

Why Choose SR2 Security Doors?

• Peace of mind security – for premises where interruption, theft, or unauthorised access would have significant operational or personal consequences.
• Trusted by insurers and specifiers – often required by insurance policies or government security frameworks for external access points.
• Greater longevity – superior build quality and high-grade components deliver long-term resistance to both attack and daily wear, making SR2 doors a cost-effective investment.
• Flexible application – available in bespoke sizes, finishes, and hardware configurations to match each site’s operational, aesthetic, and compliance needs.

Whether protecting valuable assets, confidential data, public infrastructure or private homes, an SR2 steel door delivers certified security, reliability, and substantial peace of mind in the UK’s most demanding environments.

Defender Extreme-1 SR2 Steel Doorset – Specification

Dimensions

• Maximum width (including fixing sub frame): 1460mm
• Maximum height (including fixing sub frame): 2500mm

Security Rating & Certification

• B3 (SR2) Security Rated – Independently certified by LPCB to LPS1175: Issue 8 (Ref no. 1284c/01) for robust protection against advanced forced entry attempts.
• SR2/B3 security doors are recognised throughout the UK market as providing credible protection for vulnerable external and internal access points.

Door Leaf & Threshold

• Construction: Galvanised steel double-skin with panel thickness and infill tailored to door size and required security level
• Anti-jemmy flange: Fitted to leading edge, resists prying and lever attacks
• Threshold: Standard DDA-compliant chamfered profile in 2mm stainless steel, with optional raised/extended cills, inward opening drainage profiles, 4mm ramped threshold, or integrated removable threshold for site-specific requirements

Sub Frame

• Material: Galvanised steel with bolted corners for strength
• Integrated weather seals: Silicone rubber seals bonded in for exceptional thermal and acoustic performance plus weather resistance
• Frame design supports rapid, secure installation

Hardware Options (LPS1175 Approved)

• Multipoint locking – Sashlock with lever/lever handles, or nightlatch systems
• Thumbturn operation for ease of emergency exit
• Push/pull hardware: Mico Modula PE6 full width stainless steel push bar (single leaf) or Mico MSR-1/2 PE6 panic hardware (double leaf)
• Door closers, stays, and furniture: All options approved to SR2 rating for consistency and compliance

Over Panels, Side Panels & Vision Panels

• Wide range of solid, glazed, or louvered steel side/over panels compatible and compliant within LPS1175 rating; enables flexible installation for larger or multi-access sites
• Vision panels available in multiple size/design options for safe visibility and additional light

Finish & Corrosion Resistance

• Powder coated to any RAL colour; over 250 rapid-turnaround options available
• Marine grade finishes available for coastal or chemically exposed sites
• All major components constructed from galvanised steel for maximum corrosion resistance and long-term durability

Additional Features & Compliance

• Accessibility: DDA (Disability Discrimination Act) compliant threshold options as standard
• External or internal use: Designed primarily as an external doorset but suitable for select high-security internal applications when threshold suitability is confirmed
• Manufactured entirely in the UK for stringent quality and traceability

Defender Extreme-1 SR2-rated doors are engineered for sectors that require verifiable security alongside excellent weather, thermal and acoustic performance – ideal for offices, commercial, public sector, critical infrastructure and high-value storage locations.

Metador/Samson Product Guarantee & Warranty

Guarantee Periods

• Frame and doorset: 15-year guarantee (with correct installation and maintenance)
• Ironmongery: 1-year guarantee (with correct usage and maintenance)
• Marine Grade PPC finish: 10-year guarantee (with cleaning and maintenance programme)
• Standard powdercoat finish: 1-year guarantee (with cleaning and maintenance programme)

What’s Covered?

• Repair or, at our discretion, replacement of any goods shown to be defective within the stated warranty periods from date of purchase
• If a product is supplied with a defective internal component, only that component will be replaced
• A “defective” good is one that fails to function properly under correct usage due to a fault in materials, workmanship, or design
• Goods defective on delivery will be replaced when reported within 3 working days of receipt — photographic evidence required showing the goods as delivered on their pallet

Guarantee Exclusions

• Any damage caused by abuse, neglect, unsuitable/lack of maintenance, or incorrect installation
• Use of harmful cleaning solvents on the door
• Scratches, washing, paint protection, or any damage to the paint finish
• Parts not advised or supplied by Metador
• External impacts including weather
• Fitting or repairs by persons not authorised by Metador
• Fair wear and tear

Important: To validate any guarantee or warranty, customers must maintain a documented cleaning and maintenance regime indicating frequency, methods, and products used. This record must be submitted for any claims to be considered.

Claims Procedure

• Contact Samson Doors or Metador in writing within 3 working days of discovering a defect, specifying the nature of the claim
• On request, return the defective product to Metador Ltd at your cost for inspection