LANGE is a Top 10 system window brand in China with independent intellectual property and strong expertise in aluminum window and door systems. With a 20,000 m² manufacturing facility and a professional team of 100+ designers, we combine advanced manufacturing capabilities with international design standards. As an authorized service provider for leading brands such as SCHÜCO (Germany) and YKK (Japan), LANGE delivers precision-engineered, customized window and door solutions for residential, commercial, and architectural projects worldwide.
Products Description
Integrated Aluminum MuntinsPrecisely fitted grid design with a clean, authentic French look.
6063-T5 Aluminum FrameDurable, moisture-resistant, and easy to maintain.
Flexible Grid DesignInternal or external muntins, classic French grids, arched designs, and custom layouts.
Multiple Glass OptionsTempered, laminated, Low-E, frosted, tinted, and other glass configurations.
Custom RAL ColorsFlexible color selection to match different architectural styles.
Multiple Door StylesSwing, sliding, double-door, arched, and custom configurations.
Complete Hardware SetMatching handles, hinges, locks, rollers, and accessories available.
Export-Ready ProtectionReinforced packaging helps protect doors during long-distance transportation.
Why Choose Us
22+ Years of Door & Window Engineering Expertise
LANGE operates a 20,000 m² factory in Zhengzhou, China, with 22+ years of experience in high-performance aluminum doors and windows, including custom grid glass doors.
Advanced CNC and automated equipment, including the German Elumatec SBZ 628 CNC Processing Center, ensures precise fabrication, clean grid detailing, and consistent quality.
From custom sizes and grid patterns to glass, hardware, surface finishes, mass production, export packaging, and installation guidance, our professional team provides complete project support for global customers.
Product Showcase
Refined French Grid DesignSlim, precisely aligned muntins create a clean, balanced, and elegant appearance.
Bright & Open SpacesLarge glass panels allow more natural light while maintaining visual separation between spaces.
Classic Meets ModernFrench-inspired grid details combined with slim aluminum frames suit both classic and contemporary interiors.
Clear Visual ConnectionGlass panels create an open feel while defining different living and working areas.
Smooth OperationPrecision-fitted components ensure smooth and comfortable daily use.
Flexible Glass OptionsClear, frosted, tinted, Low-E, and other glass options are available for different privacy and performance needs.
Product Parameters
Multiple Glass Options — Clear, low-iron, fluted, frosted, and frit glass for flexible light and privacy control.
Multiple Door Styles: Swing, sliding, and double-leaf options, with custom arch, curved, and arched-top designs for an authentic French vintage look. Authentic Muntin Design: Choose internal or 3D external muntins with customizable width and spacing. Precisely integrated for a refined, durable finish—no stick-on grids.
LANGE French grid glass doors combine classic French elegance with precise muntin alignment and slim aluminum frames. Swing, sliding, and arched designs are available with customizable glass, grid patterns, colors, and finishes. High-quality aluminum profiles and safety tempered glass provide durability and reliable performance for villas, apartments, B&Bs, and retail projects. Stable production and bulk delivery support global distributors, contractors, and project buyers.
Customer Feedback
LANGE French grid glass doors combine elegant French styling with precise muntin detailing, flexible customization, and reliable production. Custom sizes, grid patterns, glass, colors, and hardware are available for residential and commercial projects.
Company Profile
22+ YEARS OF MANUFACTURING EXPERIENCEProfessional experience in aluminum windows, doors, and architectural systems.
20,000 m² MANUFACTURING FACILITYA modern integrated production facility with strong manufacturing capacity.
ADVANCED CNC EQUIPMENTEquipped with imported CNC and automated production equipment from Germany, Italy, and Japan.
CUSTOMIZED SOLUTIONSCustomized dimensions, glass configurations, colors, finishes, and opening methods for different projects.
LARGE-SCALE PROJECT CAPACITYSupporting large-volume and full-container orders with efficient production and reliable delivery schedules.
GLOBAL PROJECT SUPPORTServing customers across North America, Europe, Australia, New Zealand, the Middle East, and other international markets.
Frequently Asked Questions
Q1
Are you a factory or a trading company?
We are a factory-direct manufacturer with 22+ years of experience. Our 20,000 m² facility in Zhengzhou, China is equipped with advanced CNC and automated production equipment, including German ELUMATEC SBZ 628 CNC machining centers.
Q2
This is my first time buying from China. How does the process work?
No worries. With 20+ years of export experience, we provide professional support throughout the entire process: Quotation → Design → Production → Quality Inspection → Shipment → Delivery.
Q3
What are your payment terms?
Our standard terms are:
• T/T: 30% deposit, 70% balance before shipment.
• L/C: 100% irrevocable L/C at sight.
Other payment methods may be available depending on the order and transaction terms.
Q4
What is the delivery time?
Lead time depends on order quantity, size, glass configuration, color, hardware, and customization. We will provide a confirmed production schedule after the specifications and order details are finalized.
Q5
Can the aluminum fixed panoramic window be customized?
Yes. We can customize the size, panel configuration, aluminum profile, color, glass configuration, and installation requirements according to your project. Please provide the required dimensions, installation location, and drawings or site photos if available.
Q6
Do you accept large-volume or project orders?
Yes. Our advanced production equipment supports large-volume and full-container orders, with consistent quality and reliable production capacity.
