Steel and glass - reinterpreted.
For facades with an unmistakable character
Biffar windows and front doors made of Corten steel combine the excellent performance characteristics and durability of aluminium window frames and doors with the unmistakable look of oxidized steel. Every single window and every single door is unique thanks to the uneven appearance of the rusted surfaces. The natural liveliness and warmth of the high-quality Corten steel surfaces emphasize the character of classic facades or create an exciting contrast to building fronts with modern, minimalist architecture – without pushing themselves into the foreground.
The design
- Flush view
- Oxidized Corten steel on the outer frame and sash profiles
- Many RAL, PERL and PES colors for the aluminum profile on the inside –
- Face width: frame 72 mm, sash 46 mm
- Frame construction depth 75 mm
Quality and durability
- 5-year Biffar guarantee
- High resistance to warping thanks to patented profile composite
- High weather resistance thanks to oxidation coating
- Glass fiber reinforced polyamide web for thermal separation of the profiles for excellent thermal insulation
Burglar resistance
- RC1, RC2 resistance class in accordance with DIN EN 1627
Thermal insulation
- Depending on glazing 1.5-0.94 W/m2K
Biffar Corten steel entrance doors impress with their extraordinary aesthetics – and at the same time know how to impress with the highest level of security. Whether door leaf or sash frame construction: the extra-strong door constructions made of aluminum profiles guarantee high stability, long durability and easy maintenance. The very strong construction depth ensures both excellent thermal insulation and the best burglar resistance. Our Corten steel front doors can also be equipped with the same innovative security and convenience features that characterize all our front doors.
Design
- Oxidized and surface-sealed Corten steel on a solid,
5 mm thick aluminum plate - Many RAL, PERL and PES colors for the aluminum profile
- Face width: 80 mm
- Construction thickness 101 mm
Quality and durability
- 5-year Biffar guarantee
- High resistance to warping thanks to patented profile composite
- High weather resistance thanks to oxidation coating
Burglar resistance
- RC1, RC2, RC3 resistance class according to DIN EN 1627 depending on security features.





Strong security elements for your protection
First-class service
Detailed consultation
Our Biffar specialist consultants will advise you on everything that is important to you: whether burglar resistance, U-value, building standards, monument protection requirements, energy-saving regulations or design. And not only in our studio, but also directly at your premises.
Clean installation
Our specialist fitters will install your new windows and doors on time and professionally. They work reliably, carefully and strive for maximum cleanliness. In this way, we ensure that your new doors and windows offer a high level of comfort from day one.
5-year guarantee
Biffar offers you quality, security and thermal insulation with rock-solid craftsmanship. That's why we give you a 5-year guarantee. And even after the 5-year guarantee has expired, you can rely on our excellent service