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Wide Opening Slim Frame Aluminum Casement Window Double Sash Thermal Break Outward Opening Glass Door for Luxury Roof Garden
Product Description
LANGE is a Top 10 system window brand in China, with 22+ years of expertise in aluminum doors and windows and independent intellectual property. With a 20,000 m² manufacturing facility and a professional team of 100+ designers, we combine advanced manufacturing capabilities with refined architectural design. As an authorized service provider for leading brands including SCHÜCO (Germany), YKK (Japan), and LG (South Korea), LANGE applies international quality standards to every project. From classic French grid doors to modern aluminum window and door systems, we provide precision-engineered solutions for residential, commercial, and architectural projects worldwide.
Products Description
Product Parameters
Material
6063-T5/T6 Aluminum Alloy
Profile Thickness
1.4mm – 2.0mm
Window Glass
5.0mm – 10.0mm
Door Glass
Double Insulated Glass
Glass Options
Low-E / Tempered / Laminated
Hardware Options
KINLONG / HOPO / ROTO / SIEGENIA
Product Showcase
| Testing Items | Performance Class | Technical Value / Standard |
|---|---|---|
| Wind Pressure Resistance | Class 9 | Hurricane Impact Level |
| Thermal Insulation | Class 10 | Ultra-Low U-Value (Thermal Break) |
| Air Tightness | Class 8 | High Precision Seal |
| Water Tightness | Class 6 | Heavy Rain Protection |
| Max Sound Insulation | Class 5 | Noise Reduction ≤ 35-45dB |
Customer Feedback
We have professional engineer support, high efficiency sales team and competitive price superiority, Our products have won the praise and love of clients at home and abroad.and attract customers from all over the world, we export to over 50 countries
| Customer Pain Points | Our Solutions |
|---|---|
| Bulky Traditional Frames: Obstruct natural light and conflict with modern minimalist interior designs. | Ultra-Slim Profile: Minimalist 24mm narrow frame design increases light intake by 30%, perfectly matching modern aesthetics. |
| Poor Sealing Performance: Outward-opening windows are prone to water leakage and air infiltration during heavy rain. | Triple Sealing System: Utilizes three layers of imported EPDM sealant strips to achieve top-tier watertightness and airtightness standards. |
| Short Hardware Lifespan: Frequent operation often leads to loose handles and rusted hinges over time. | Precision Hardware: Equipped with imported hardware; supporting 100,000+ trouble-free opening cycles. Hardware customization available. |
| Safety Risks: Concerns about windows falling from high-rise buildings or children accidentally opening them. | Safety First: Standard anti-fall cable design combined with hidden built-in child locks to ensure absolute family safety. |
Installation Instructions
Aluminum Window Installation Guide
1
Check
Check the window, glass, hardware, size, and wall opening before installation.
2
Position
Place the frame into the opening and adjust the level, plumb, and alignment.
3
Fix
Secure the frame to the wall with suitable anchors or fixing brackets.
4
Seal
Fill the installation gap and apply weather-resistant sealant. Keep drainage holes clear.
5
Glaze
Install setting blocks, glass, gaskets, and glazing beads securely.
6
Adjust
Install and adjust the hardware. Check smooth opening, closing, and locking.
7
Inspect
Check frame alignment, glass, sealing, hardware, and drainage before completion.
Installation Note: Installation should follow the window design, building structure, and local building codes.
Product packaging
Standard Packaging:
Protective Film → Foam Protection → Corner Protection → Wooden Crate/Pallet
Protective Film → Foam Protection → Corner Protection → Wooden Crate/Pallet
Our systems meet and exceed international benchmarks, including NFRC (Energy Efficient Performance), AS2047 (Oceania), CE (Europe), and IGCC/SGCC (Glass Safety).
Company Profile
22+ YEARS OF MANUFACTURING EXPERIENCE
Professional experience in aluminum windows, doors, and architectural systems.
20,000 m² MANUFACTURING FACILITY
A modern integrated production facility with strong manufacturing capacity.
ADVANCED CNC EQUIPMENT
Equipped with imported CNC and automated production equipment from Germany, Italy, and Japan.
CUSTOMIZED SOLUTIONS
Customized dimensions, glass configurations, colors, finishes, and opening methods for different projects.
LARGE-SCALE PROJECT CAPACITY
Supporting large-volume and full-container orders with efficient production and reliable delivery schedules.
GLOBAL PROJECT SUPPORT
Serving customers across North America, Europe, Australia, New Zealand, the Middle East, and other international markets.
Frequently Asked Questions (FAQ)
Q1
How is LANGE different from other standard panoramic doors on the market?
LANGE is a "Top 10" system brand in China with independent intellectual property. Unlike generic local workshops, we are authorized service providers for international leaders like SCHUCO (Germany) and YKK (Japan). Our 20,000㎡ industrial park and 100+ professional designers guarantee a standard of precision that competitors cannot match.
Q2
As a first-time online buyer from China, how does the operation process work?
No worry, we have over 20 years export experiences to all over the world. We provide professional end-to-end support to ensure a smooth purchasing process: Order confirmation → Production → Shipment → Delivery.
Q3
How about the payment terms and how to pay?
We support 100% in advance or deposit in advance with balance before shipment. We accept TT (Wire transfer), online transfer, Credit card, VISA, Paypal, Apple Pay, and L/C at sight.
Q4
How long is the delivery cycle?
Delivery time depends on size, glass configuration, color, hardware, level of customization, and order quantity. Once the design, payment terms, and technical specifications are confirmed, we will provide a formal production plan. For customized projects, it is recommended to allow sufficient time for production, quality inspection, and shipping.
Q5
Can this panoramic sliding door be customized in size?
Yes. Doorway dimensions, number of panels, opening direction, glass configuration, color, lock type, and track type can all be customized according to project requirements. Please provide the doorway width, height, installation location, and on-site photos before placing an order. We will calculate a solution based on the actual dimensions.
Q6
What are your specific payment terms?
T/T: 30% deposit, 70% balance paid before shipment. L/C: 100% irrevocable L/C at sight.
