SF85
" World-class foldable excellence: where minimalist design meets maximum performance
This revolutionary Alumil SF85 with Roto Frank Systems, a highly insulated bi-folding door system with undersliding operation , represents the pinnacle of modern engineering, seamlessly combining minimalist aesthetics with outstanding performance . Designed for projects that refuse to compromise, this system offers exceptional dimensions with remarkably low sightlines , while simultaneously providing enhanced burglary protection in a wide range of solutions .
Alumil SF85 with Roto Frank Systems ' unprecedented scale and transparency
Push the architectural boundaries with truly impressive dimensions :
- Heights up to 4.0 meters for dramatic floor-to-ceiling installations
- Individual ventilation widths up to 1.5 metres, allowing for substantial panel sizes
- Total spans that transform entire facades into movable walls
- Astonishingly reduced sight lines that virtually disappear, maximizing glass and minimizing frame visibility
Complete design freedom
The Alumil SF85 with Roto Frank Systems' extensive range of technical solutions guarantees perfect configurations for every vision:
- Even or odd number of vents for symmetrical or asymmetrical designs
- Corner constructions create panoramic openings of 90 degrees
- Inward or outward opening options that adapt to spatial requirements
- Multiple threshold solutions from flat to standard configurations
Aesthetic versatility
Choose from the wide range of Alumil SF85 with Roto Frank Systems ventilation styles to achieve the desired look:
- Standard profiles for classic, contemporary aesthetics
- Minimal variants where frames virtually disappear
- Steel-look options for an industrial chic look
- Semi-structural solutions for architectural statements
Performance that exceeds expectations
Experience the extreme performance of Alumil SF85 with Roto Frank Systems, validated by rigorous testing:
- Air permeability ratings that ensure draught-free comfort
- Wind load resistance to maintain stability in heavy weather
- Waterproofing that protects the interior against driving rain
- All parameters exceed industry standards
Alumil SF85 with Roto Frank Systems Energy Excellence delivers savings
Achieve significant energy and cost savings by:
- Excellent thermal insulation ensures perfect climate control
- U-values as low as 1.0 W/m²K match the performance of solid walls
- Reduced heating and cooling demand all year round
- Long-term savings offset the initial investment
Safety without compromise
Enjoy peace of mind with Alumil SF85 featuring Roto Frank Systems' enhanced security features :
- Advanced burglary protection integrated everywhere
- Multi-point locking systems that intervene automatically
- Comply with all industry security standards
- Reinforced construction that provides resistance to burglary
Operational excellence
The Alumil SF85 with Roto Frank Systems bottom slide mechanism ensures smooth operation despite its impressive dimensions:
- Effortless gliding, even with panels of maximum weight
- Long-lasting, flawless functionality thanks to precision engineering
- Minimum maintenance requirements
- Consistent performance over millions of cycles
Perfect applications of Alumil SF85 with Roto Frank Systems
This system excels in:
- Luxury homes that demand the extraordinary
- Top-quality commercial spaces that require flexibility
- Catering establishments with large indoor and outdoor spaces
- Modern penthouses with maximum views
- Architectural examples that push the boundaries of design
The advantage of the Alumil SF85 bottom slide with Roto Frank Systems
Unlike traditional top-hung systems:
- Superior stability with large panels
- Better weather sealing at the threshold
- Reduced tension on the structure
- Smoother functioning over time
- Enhanced security engagement
Why choose Alumil SF85 with Roto Frank Systems ?
- World-class engineering from leading manufacturers
- Minimalist aesthetic that defines modern architecture
- Maximum dimensions allow for ambitious designs
- Complete solutions for every configuration
- Proven performance that exceeds all standards
- Future-proof investment with value retention
Transform your vision
At Deuramrijk.nl, we offer this exceptional folding system for customers who demand the absolute highest level of quality. Whether creating a seamless indoor-outdoor living space, flexible commercial spaces, or architectural masterpieces, this system offers limitless possibilities.
Contact us today and experience how world-class bifolding door technology can transform your project from impressive to extraordinary. Where minimalist frames meet maximum impact and your architectural vision becomes a stunning reality.
General
- THERMAL INSULATION - Yes
- AESTHETICS - minimal, relatively low sight line
- OPERATION - lower slide
- PANEL - standard, minimal, steel-look, semi-structural
- APPLICATIONS - luxury residential, commercial facilities
Technical features
- Wing width - 85 mm
- GLAZING - 20-53mm, 34-75mm (structural)
- POLYAMIDE - Double 40mm
- EXTRA INSULATING FASTENINGS - Alumyl Energy Resilient Insulation and PE Insulation Foam
- MAIN GASKET - Unified co-extruded EPDM/foam
- LOCKING - 5-point (door), 4-point (intermediate wings)
- VISIBLE ALUMINIUM – 86 mm urban & minimal / 105 mm standard
- MAXIMUM WEIGHT - 200 kg/opening
- MAXIMUM HEIGHT - 4.0 m
- MAXIMUM PANEL WIDTH - 1.5 m
Performance
- WATERTIGHTNESS - 7A/9A (with sill), IFT
- BREATHABILITY - class 4, IFT
- WIND LOAD RESISTANCE - class C3/B3, IFT
- BURGLAR RESISTANCE - RC2 IFT & PAS24 (UK)
Features
- THERMAL PERFORMANCE - 1.0 W/m²K, IFT
Certificates
Why choose Deuraamrijk?
the most exclusive brand in Netherland
Own production & qualitycontrol
We design, build, and assemble in our own facility, ensuring total control over quality and delivery.
Tailor-made to measure
From residential windows to commercial façades, every product is custom-built to your exact dimensions and needs.
Certified premium materials
We use top-quality, certified systems from brands like ALUMIL for durability, insulation, and design consistency.
Customer satisfaction
Years of happy clients and repeat projects across the Netherlands—quality proven in the field, supported by verified references and multi‑year warranties.
Multiple payment methods
We offer different options for payment and discounts (depends on early payment) depending on the wishes and needs of clients, such as payment in two or more installments. Choose what suits you best: iDEAL, SEPA bank transfer, credit/debit card.
24/7 support
Round-the-clock assistance via phone/WhatsApp/email, plus priority call-outs for urgent issues (locks, glazing, sealing) and proactive maintenance reminders.
Designed for comfort. Built for performance
All-Season Master
Choose smart - Choose Deuraamrijk
Mastering every season, from the height of summer to the depths of winter, our Aluminum and PVC systems are precision-engineered for the Dutch climate. We deliver superior thermal insulation to regulate your home's temperature, robust noise protection for your peace ofmind, and uncompromising all-weather durability—all underpinned by built-in safety you can rely on.
Thermal insulation
Our systems offer excellent thermal insulation, helping to regulate indoor temperatures throughout the year. They keep the heat out in the summer and keep the heat in in the winter.
Weather resistance
Built to withstand harsh weather conditions, our systems offer exceptional protection against wind, rain and UV rays. Precisely sealed frames prevent the penetration of air and water.
Security features
Our systems are equipped with multi-point locking mechanisms and reinforced profiles for enhanced protection. They are designed to prevent burglaries and improve home security.
Frequently asked questions
Whether you're planning a new build or an upgrade to an existing space,
here are the answers you need about our products, services and installation process.
Aluminum is stronger, more durable and ideal for larger openings or modern designs. PVC is more affordable, offers excellent thermal insulation and is popular for residential use. We offer both, custom made to your needs.
Yes, absolutely! Alumil systems allow you to choose from a wide range of colors and textures. Alumil windows and doors are exclusively made to measure. Each system is made exactly according to the dimensions and specifications of your facility, which allows for complete customization of design, functionality and energy efficiency
Depending on the size of the project and request of the customer.
Alumil offers a wide range of complementary solutions:
Insect screens: sliding, standard and ZIP systems integrated with windows and doors.
Shading systems: include blinds, external blinds, pergolas and other systems balanced with aluminum systems, suitable for all types of opening and installation
Alumil systems come with a warranty when installed through authorized partners. Global practice is usually a minimum of 2 years of warranty, subject to proper installation, use and maintenance.
In addition to the warranty, the products have the CE mark and numerous international certificates (ISO, QUALICOAT, IFT, etc.) that confirm quality and reliability.
Contact us about anything related to our company or services.
We'll do our best to get back to you as quickly as possible.
- Lelystad, Flevoland Netherlands
- +3187670919
- duraamrijk@deuraarijk.com