Engineered specifically to fulfill the stringent energy conservation regulations (GEG) and architectural aesthetics of both historic Altbau modernizations and state-of-the-art Neubau projects across Berlin.
Ultra-narrow thermal break aluminium profiles customized for historic building facade restoration in Mitte & Charlottenburg.
Send Inquiry Now
Achieving ultra-low U-values (Uw ≤ 0.8 W/m²K) with multi-chamber argon insulation for energy efficiency compliance.
Send Inquiry Now
Reinforced multi-point locking systems engineered according to DIN EN 1627 for high-security commercial and residential urban sites.
Send Inquiry Now
Advanced acoustic lamination glass matrix designed to attenuate inner-city railway and traffic noise in high-density districts.
Send Inquiry NowThe real estate landscape in Berlin presents a sophisticated dual challenge for architects, project managers, and property developers. On one side, historic preservation mandates (Denkmalschutz) demand elegant, narrow sightlines that harmonize with classic 19th-century Gründerzeit architecture found in Prenzlauer Berg, Pankow, and Wilmersdorf. On the other side, modern developments (Neubau) in districts like Friedrichshain-Kreuzberg and Adlershof demand strict adherence to Germany’s revised Building Energy Act (Gebäudeenergiegesetz - GEG 2024).
As a specialized B2B manufacturer and exporter of architectural French Doors, Wuhan Fortis Building Technology Co., Ltd. bridges this gap by offering precision-engineered exterior French door systems that meet or exceed thermal transmittance thresholds (Uw values as low as 0.78 W/m²K), air permeability standards (DIN EN 12207 Class 4), and resistance to wind load (DIN EN 12210 Class C5/B5).
Multi-chamber polyamide thermal break profiles achieving overall Uw values ≤ 0.8 W/m²K for Passive House projects.
Integration of Winkhaus / Roto multi-point locking mechanisms, anti-pry hooks, and laminated safety glass (VSG) certified up to RC3 level.
Heavy-duty sound attenuation matrices achieving up to 48dB noise reduction, essential for urban roadside installations.
Established in 2014, Wuhan Fortis Building Technology Co., Ltd. spans an expansive production space of 38,000 square meters. Rooted in 12 years of specialized manufacturing experience and 9 years in international export operations, our annual export revenue reaches $34 million. We primarily serve real estate developers, hotel construction companies, and hardware distributors across Europe, North America, and Southeast Asia.
Product reliability is assured by 48 certified QC specialists executing structural stress tests, hardware cycle endurance checks, and salt spray corrosion testing. With a robust network of 950 supply chain suppliers, Fortis provides customized solutions ranging from motorized sliding mechanisms to ultra-narrow frame sightlines. Powered by 60 R&D engineers, the company introduced 75 new energy-efficient window models last year.
Every French Door batch destined for Berlin undergoes rigorous testing procedures, including wind load resistance tests up to 3000 Pa and water tightness testing under continuous simulated torrential rainfall of 600 Pa (DIN EN 12208 Class 9A).
Our 38,000 square meter intelligent manufacturing facility operates under ISO 9001 and ISO 14001 certification. Every French door assembly moves through rigorous computerized processing steps to ensure zero-defect tolerance for high-end European construction projects.
Raw Materials
Cutting
Punching
Hollow Processing
Gluing
Assmebly
Debugging
Packing
Laser Cutting Machine
Punching Machine
Assembly Line
Double Head Sawing Machine
Pressing Machine
Hollow Line
Glass Cleaning Machine
Bending Machine
Automatic End Milling Machine
Debugging
Debugging Frame
Berlin experiences freezing continental winters and warm summers (Climate Zone 4). Exterior French door assemblies must withstand extreme thermal expansion differentials between interior ambient heating (+21°C) and exterior frost (-15°C) without profile warping or seal degradation.
| Technical Parameter | Standard Specification | Wuhan Fortis Premium Berlin Option |
|---|---|---|
| Thermal Transmittance (Uw) | 1.3 W/m²K (GEG Standard) | 0.78 - 0.85 W/m²K (Passive House Standard) |
| Profile Alloy & Temper | Standard 6063-T5 Aluminium | High-Tensile 6063-T6 Architectural Grade |
| Thermal Isolation Strip | 14.8mm Polyamide Strip | 34mm Multi-Chamber Technoform PA66GF25 |
| Acoustic Rating (Rw) | 32 - 35 dB | Up to 48 dB (with Triple VSG Laminated Glass) |
| Water Tightness | Class 5A (200 Pa) | Class 9A / E1050 (1050 Pa Continuous Water Test) |
| Security Grade | Basic Latch Lock (RC1) | RC2 / RC3 Certified with Winkhaus Multi-Point Gear |
Our R&D team engineered a 5-chamber aluminum profile filled with high-density expanded polyurethane (PUR) foam. This design breaks thermal bridges and prevents condensation formation inside Berlin apartments during severe winter months.
Utilizing automotive-grade EPDM (Ethylene Propylene Diene Monomer) continuous weatherstripping with vulcanized corner joints. Provides lifetime elasticity and complete resistance to ozone, UV radiation, and temperature fluctuations.
Double magnetron sputtering Low-E glass combinations allow high visual light transmittance (VLT > 72%) while selectively blocking infrared heat radiation, reducing summer cooling requirements for urban apartments.
Managing cross-border logistics for large-scale commercial glazing requires bulletproof packaging, strict customs documentation, and resilient freight routes. Wuhan Fortis leverages its strategic location at the central logistics hub of Wuhan, China, offering direct multimodal transport options straight to Berlin and the surrounding Brandenburg metropolitan region.
Whether delivering directly to job sites near Berlin-Spandau freight depot or shipping via Hamburg port with inland water/rail connects, we guarantee on-time delivery with zero breakage guarantees.
Transit time: 16-18 Days from Wuhan Freight Terminal directly to Duisburg/Berlin Terminal. Ideal for time-sensitive development projects.
Transit time: 30-35 Days. Cost-effective solution for bulk commercial orders with optimized container load stacking (FCL).
To prevent surface scratches, aluminum oxidation, or glass stress fractures during transit, every French door unit undergoes a 5-layer protective wrapping process: (1) PE protective film on aluminum profile surfaces, (2) Corner guards made of dense shock-absorbing EPE foam, (3) Vacuum-sealed shrink wrap, (4) Fumigation-free ISPM 15 compliant reinforced plywood crates, and (5) Steel-belt container tie-downs.
Our French Door products are engineered to fit distinct architectural typologies present throughout the capital city of Germany.
Location Context: Charlottenburg, Wilmersdorf, Schöneberg.
Requirements: Heritage-compliant slim frame sightlines with decorative interior glazing bars (Wiener Sprossen). Fortis provides custom arch-top French doors with thermal break performance meeting heritage conservation guidelines.
Location Context: Berlin Mitte, Europacity, Westend.
Requirements: Large floor-to-ceiling glass openings, concealed hinges, motorized smart access control, and seamless threshold transitions for barrier-free living according to DIN 18040-2.
Location Context: Zehlendorf, Wannsee, Dahlem.
Requirements: Passive House certification (Uw ≤ 0.8 W/m²K), RC3 maximum security rating, combined with solar shading glass to optimize annual heating/cooling efficiency.
Explore our full line of export-ready French doors designed for commercial developers, general contractors, and door & window distributors in Germany.
Engineered for expansive terrace openings, supporting sash weights up to 400kg with effortless finger-touch gliding.
Send Inquiry Now
Maximized openable aperture for cafes, restaurants, and luxury penthouses with bottom-loaded stainless steel roller tracks.
Send Inquiry Now
Certified fire-resistant aluminium profiles with intumescent swelling gaskets for public commercial buildings.
Send Inquiry Now
Ultra-thin visible frame width (only 18mm) for panoramic view aesthetics in modern Berlin villa installations.
Send Inquiry Now
Integrated keypad, facial recognition, and smart home automation protocol (KNX / Zigbee compatible) locking entry doors.
Send Inquiry Now
Precision CNC-bent thermal break profiles specifically crafted for historic building restoration compliance.
Send Inquiry Now
Dual-opening inward and outward tilt-and-turn functionality for flexible balcony and terrace ventilation management.
Send Inquiry Now
Maximum energy conservation rating featuring four glass panes, double low-E coating, and argon gas chambers.
Send Inquiry NowDetailed technical answers to help German architects, builders, and import distributors evaluate our manufacturing capabilities.
Partner with Wuhan Fortis Building Technology Co., Ltd. for factory-direct pricing, certified German energy compliance, and robust supply chain execution.
Send Inquiry Now
Fortis Window