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SECUFIRE® Steel Tubular Frame Door
SECUFIRE® combines minimalist design with robust security. Offering protection against forced entry, ballistic attack, blasts, fire, and smoke, this tubular steel door system achieves high resistance classes while maintaining narrow profiles and large glazing areas — ideal for multifunctional applications in demanding environments.
Forced entry and break-out resistance up to RC4 (DIN EN 1627–1630)
Bullet resistance up to FB4-NS and glazing up to BR4-NS
Tested blast resistance with 500 kg of explosives at 28 m (GSA 2 | ISO B)
Optional fire protection up to T30/EI30 and smoke resistance to S200
Available in 4 profile depths for different security and design needs
Slim profiles (from 30 mm) with large glazing and optional infill panels
Thermal insulation up to UW 0.9 W/m²K and sound insulation up to RW 46 dB
200,000 open/close cycles with 400 kg door leaf weight (C5 classification)
Tested locking systems including panic hardware, prison locks, and automation
About the SECUFIRE® Steel Tubular Frame Door
Slimline architectural design meets reliable multi-threat protection
The SECUFIRE® series redefines secure entryways with its steel tubular frame construction — enabling high resistance classes while supporting elegant, glass-heavy designs. Built for demanding sectors, it protects against forced entry, break-out, bullets, blasts, fire, and smoke, with slim visible lines and flush finishes.
Offered in four profile variants (S, U, F, P), SECUFIRE® accommodates different security requirements, infill thicknesses, and aesthetic preferences. Its robust construction supports heavy-duty hinges, certified locking mechanisms, and advanced glazing systems — while still offering excellent thermal and acoustic performance.
Ideal for secure public buildings, hospitals, forensic facilities, and critical infrastructure, SECUFIRE® allows precise configuration to your needs. It’s fully compatible with SYSTEM SÄLZER® facades and windows, ensuring a cohesive, high-performance security solution throughout the building envelope.
Technical Specifications
Versatile and certified performance for multi-threat applications
Forced Entry & Break-out Resistance
Tested from both sides to DIN EN 1627–1630 with resistance up to RC4. Glazing certified to DIN EN 356 up to P8B, ensuring reliable defence against intrusion and escape attempts.
Bullet Resistance
Compliant with DIN EN 1522–1523 up to FB4-NS, and glazing certified to BR4-NS (DIN EN 1063). Ideal for facilities requiring ballistic protection without compromising visibility.
Blast Resistance
Tested to customer-specific requirements with 500 kg of explosives at 28 m. Rated GSA 2 and ISO B for ‘Very High’ and ‘No Hazard’ classifications, with bespoke SÄLZER glazing options.
Fire & Smoke Resistance
Optional fire resistance up to T30/EI30 and smoke resistance up to S200, depending on configuration. Provides additional protection in life-critical zones and public buildings.
Thermal & Acoustic Insulation
Delivers thermal performance up to UW 0.9 W/m²K and sound insulation up to RW 46 dB, offering a secure and comfortable indoor environment.
Durability & Hinges
Tested for 200,000 cycles (C5 classification) with door leaf weights up to 400 kg. Available with welded, screwed or concealed hinges to suit aesthetic and operational needs.
Locking Systems & Safety Features
Supports mechanical, electro-mechanical and motorised locks. Optional configurations for panic hardware (DIN 179 & 1125), prison locks, interlocking doors, and access control integration.
Customisation & Installation
Available in four profile types with infill options including glass, panels, grilles and louvres. Surface finishes include primer, powder coat, and cladding in timber, bronze, or stainless steel.
What Our Customers Say
We take pride in delivering exceptional glazing solutions and outstanding customer service. Here’s what some of our happy clients have to say about working with Minimal Frame Projects.