
Large Casement Windows
Exceptional large casement windows with premium aluminum swing windows design, DERCHI's innovative casement window manufacturers deliver superior natural lighting and airflow control.










This large aluminum swing window from casement manufacturers delivers superior ventilation and protection, ensuring smooth operation and design.
100% waterproof and Anti-theft
CE / NFRC / CSA Standard Certification
US/ AU IGCC Standard Glass Certification
100% thermal insulation/windproof/ soundproof

Description
Videos
Customizable Styles
Hardware Accessories
Advantages
Certificate
E6N Large Aluminum Casement Windows - Performance Demonstration
Watch the E6N thermal insulation aluminum casement windows in action. This video showcases the tilt and turn functionality, thermal performance, and build quality of our large casement windows.
Key Features Demonstrated:
> Thermal insulation performance (K-value 1.7)
> Wind pressure resistance (Grade 9)
> Sound insulation up to 35dB
> Triple-sealed design for energy efficiency
> Smooth tilt and turn operation
> Premium aluminum construction
See how these swing windows from leading casement window manufacturers deliver comfort, energy savings, and durability for both residential and commercial applications. The demonstration includes real-world performance testing and installation process highlights.
Comprehensive Customization Options
DERCHI E6N large casement windows offer complete customization solutions for aluminum swing windows. Our casement window manufacturers provide flexible options across opening methods, colors, glazing, and style configurations to meet specific project requirements and architectural designs.

Color Customization
DERCHI E6N large casement windows offer comprehensive color options through multiple surface treatments and finishes. These aluminum swing windows provide extensive customization to meet diverse architectural and design requirements.
Available Color Options:
> Surface Treatments:Five professional coating methods including powder coating, electrophoresis, PVDF, anodizing, and wood grain treatment for durability and aesthetics
> PVDF Premium Colors:Three high-performance finishes - Mint Gold, Silverflash, and Indigo Grey - designed for maximum weather resistance and color retention
> Standard Stock Colors:Nine versatile options including Black Skin, Galaxy Black, Black Walnut, Dark Coffee, Light Coffee, Black Spar, Sand Grey, Pear Wood, and White for immediate availability
These color customization options allow casement window manufacturers to deliver personalized solutions for swing windows, ensuring compatibility with various architectural styles and performance requirements.

Glass Customization
DERCHI E6N large casement windows offer multiple glazing options for energy efficiency, safety, and performance requirements. These aluminum swing windows accommodate various glass specifications to meet building standards and environmental conditions.
Available Glass Options:
> Performance Glass:Low-E Glass, Insulated Double Glass, Insulated Triple Glass for thermal efficiency and energy savings
> Safety Glass:Tempered Glass, Laminated Glass, Bullet-proof Glass for security and impact resistance requirements
> Specialty Glass:Reflective Glass, Tinted Glass for solar control and privacy applications
These glazing solutions allow casement window manufacturers to customize swing windows based on specific project requirements, climate conditions, and safety regulations.

Opening Method Customization
DERCHI E6N large casement windows provide three opening configurations for different ventilation and access requirements. These aluminum swing windows offer flexible operation modes to suit various architectural applications and user preferences.
Available Opening Methods:
> Inward Opening Window:Single opening mode with side hinges that swing inward for traditional operation and easy cleaning access from interior
> Double Internal Opening:Dual operation system combining side swing and tilt functions for enhanced ventilation control and space management in confined areas
> Tilt and Turn:Complete functionality with horizontal side opening and vertical tilt operation providing maximum ventilation options and security features
These opening configurations allow casement window manufacturers to customize swing windows based on building requirements, safety codes, and user accessibility needs for optimal performance.

Style Customization
DERCHI E6N large casement windows offer ten configuration styles for diverse architectural requirements. These aluminum swing windows provide flexible layouts to match building designs and functional needs across residential and commercial applications.
Available Style Configurations:
> Standard Configurations (C1-C6):Single sash, double opening, two-section, three-section, hexagonal, and wide center glass designs for common applications
> Decorative Configurations (C7-C8):Arched top and curved top designs for enhanced architectural aesthetics and visual appeal
> Large Glass Configurations (C9-C10):Expansive glazing layouts with compact side elements for maximum light transmission and modern appearance
These style options enable casement window manufacturers to customize swing windows for specific architectural themes, space requirements, and design preferences.

What Are DERCHI E6N Large Casement Windows?
DERCHI manufactures the E6N series of large casement windows with tilt and turn functionality for residential and commercial use. These aluminum swing windows open inward and feature thermal break technology that reduces heat transfer between interior and exterior spaces. The dual-function handle system allows users to tilt the window from the top for ventilation or turn it to open fully like a door. The inward-opening design protects against weather damage and enables cleaning from inside the building. As experienced casement window manufacturers, DERCHI constructs these aluminum swing windows with durable frames that require minimal maintenance. The E6N series offers multiple exterior profiles to match different architectural styles and works well in single installations or multi-unit projects. These swing windows provide reliable operation, weather sealing, and flexible ventilation options for various building types and climates.
Large Casement Windows: DERCHI E6N Aluminum Swing Windows Features
Our aluminum swing windows represent advanced engineering in large casement windows design. These swing windows deliver performance through innovative construction methods and quality components. Casement window manufacturers trust these features for residential and commercial applications.

Glass System
> 5mm+27A+5mm double glazing:Large air gap provides thermal insulation and sound reduction.
> Inert gas injection option:Prevents fogging, condensation, and frost formation while improving thermal performance.
> Fluorocarbon-treated aluminum spacers:Prevents discoloration and maintains appearance over time.
> DERCHI branded spacers:Logo imprint ensures product authenticity and brand recognition.
Connection System
> Flow-guided adhesive corner codes : External frame, mullion, sub-frame, and sash use efficient corner connections for flat joints.
> Dual-component corner adhesive : Combined with flow-guided corner codes to enhance waterproofing and corner strength.


Hardware Components
> Winkhaus antibacterial handle:Base-free design reduces bacteria growth and provides safe operation with clean appearance.
> Winkhaus tilt-turn hardware:Built-in misoperation prevention, supports up to 80KG per sash with reliable performance.
> Winkhaus anti-sag drive box:Prevents skewing during operation and reduces failure rates through built-in protection.
> Password handle for screens:Prevents accidental opening by children for enhanced safety.
> EPDM foam gasket for opening sash:Automotive-grade materials improve sealing and water resistance.
> Water-expanding EPDM outdoor gasket:Expands 3x when wet to prevent water penetration in coastal and typhoon areas.
Structural Design
> Three-seal design with pressure equalization:Applied to both opening and fixed positions for enhanced sealing and drainage.
> Anti-collision corner guards:Safety feature protects users from sharp edges during window operation.
> Flat frame design:Interior and exterior surfaces remain flush for clean appearance and modern aesthetics.
> Vertical isothermal line design:Optimized thermal performance through strategic structural placement.
> Optional insulation cotton:Additional sound and thermal insulation can be integrated into window assembly.
> Hidden drainage system:Concealed water management prevents backflow while maintaining clean lines.
> Magnetic strips for screens:Easy closing mechanism with quick-release hinges for convenient screen cleaning.
> Continuous foam bending gasket:Center gasket uses seamless corner processing to eliminate joints and improve air tightness.

Ready to Experience Premium Large Casement Windows?
Transform your space with DERCHI E6N aluminum swing windows that combine superior insulation, advanced hardware, and elegant design. Our casement window manufacturers deliver quality that stands the test of time, backed by innovative engineering and reliable performance.
Technical Performance Standards
The DERCHI E6N represents advanced aluminum swing windows designed for large openings. These casement windows deliver robust protection against water infiltration, air leakage, and wind pressure while providing sound reduction and energy efficiency. As leading casement window manufacturers, DERCHI engineered these swing windows to meet demanding performance standards for residential and commercial applications.
U-Factor - 0.23
Thermal transmission coefficient indicates heat transfer resistance through window assembly. Low U-value demonstrates energy conservation capabilities in heating and cooling. Insulated frame technology reduces thermal bridging between interior and exterior. Performance meets energy efficiency standards for building codes.
Wind Pressure Resistance - 5 KPa
Withstands wind loads equivalent to moderate storm conditions. Reinforced aluminum frame construction distributes stress loads uniformly. Tested structural integrity ensures window stability during weather events. Safety glazing systems remain secure under pressure variations.
SHGC - 0.20
Solar Heat Gain Coefficient measures solar radiation transmission through glazing. Low SHGC value reduces cooling loads in warm climate conditions. Coating technology controls solar energy while maintaining visible light transmission. Balances energy efficiency with natural lighting requirements.
Water Tightness - 700 Pa
Prevents water penetration under pressure equivalent to heavy rainfall conditions. Tested seal integrity protects interior spaces from moisture damage. Multi-point locking system creates watertight barriers at closure points. Weather sealing technology maintains performance over extended use periods.
Air Tightness - 1.2m³/(m·h)
Controls air leakage to minimize energy loss through window gaps. Precision-fitted frames reduce drafts and maintain indoor climate control. Gasket sealing systems create barriers against unwanted air exchange. Low infiltration rate supports heating and cooling system efficiency.
Sound Insulation Performance - 35 dB
Reduces external noise transmission for quieter interior environments. Multi-chamber frame design disrupts sound wave transmission paths. Glass specifications optimized for acoustic dampening properties. Sealing systems prevent sound leakage through frame connections.
Technical Specifications
Complete technical details for DERCHI E6N Big Size Tilt And Turn Casement Windows. These specifications ensure optimal performance and quality standards. Review these parameters before installation and ordering.
Parameter | Details |
Glass Configuration | Double Tempered Glass with Argon Gas |
Glass Specification | 5mm+27A+5mm (PVDF Aluminum Strip Between Double Glass) |
Profile Material | 6063-T5 Aluminum Profile |
Profile Thickness | 2.0MM |
Frame Width | 103MM |
Handle Type | WEHAG Handle in Black and Silver |
Hardware System | WBHAG 180° Tilt and Turn Accessories |
Insulation Strip | Standard BAYUNYL Insulation Strip |
Opening Method | Tilt and Turn/Inward Opening |
Package Options | New 48 Pack/New 88 Pack |
Sealing Material | EPDM Rubber Strip |
Available Width | 480-850mm |
Available Height | 600-2400mm |
Position Fixing | Internal and External Rubber Strip Technology |
Security Feature | Built-in Diamond Mesh Wire Pressing Process |
Frame Process | Whole Frame Two-Component Injection Molding Process |
Large Aluminum Casement Windows - Application Markets
DERCHI's E6N large casement windows serve diverse building types through their swing window design. These aluminum swing windows provide ventilation and natural light across commercial and residential settings. As trusted casement window manufacturers, we deliver solutions for offices, homes, healthcare facilities, and educational buildings.

Commercial
Large swing windows fit office buildings, retail centers, and business complexes. The aluminum frame construction supports heavy glass panels while maintaining structural integrity. Tilt and turn operation allows controlled ventilation in work environments. These windows meet commercial building codes and energy standards.

Residential
Homeowners choose these large casement windows for living rooms, bedrooms, and kitchen areas. The inward-opening design saves exterior space while providing full opening capability. Aluminum construction requires minimal maintenance compared to wood frames. The swing mechanism offers easy cleaning access from inside.
Why Choose DERCHI E6N Large Casement Windows
DERCHI specializes in manufacturing premium aluminum swing windows that deliver superior performance for modern buildings. Our E6N series large casement windows feature advanced engineering and German-quality components to ensure long-lasting operation and energy efficiency.

Glass & Frame Construction
Our double tempered glass system uses 5mm+27A+5mm specification to provide optimal thermal insulation performance. The 2.0mm thick aluminum alloy frame ensures exceptional structural strength and long-term durability. Strategic thermal break strips prevent thermal bridging effects and enhance overall energy efficiency throughout the building.

Sealing Technology
The triple sealing system provides advanced sealing between opening and fixed panels to ensure superior airtightness in all weather conditions. Multi-layer sealing prevents water infiltration during harsh weather while enhanced sealing technology reduces heating and cooling costs throughout the year.

Thermal Performance
The 35mm PA66 thermal strips deliver seven-level thermal insulation that significantly reduces energy consumption. Vertical isothermal design creates extended thermal conduction paths that prevent cold bridge formation and optimize thermal performance ratings throughout the frame structure.

Water Management System
The hidden drainage system features concealed drainage holes that effectively remove accumulated water while maintaining a clean, professional appearance. Interior and exterior frames align horizontally to create seamless water management that prevents moisture buildup and extends window lifespan.

Advanced Corner Technology
Our injection corner joint technology uses silicone-filled connections that provide 10 times stronger bonds than standard screw assemblies. The precise 45-degree seamless connection improves both structural integrity and sealing performance across all frame joints, ensuring superior durability.

Premium Hardware System
German WEHAG hardware components are engineered to withstand over 100,000 opening cycles, ensuring reliable long-term operation. The tilt and turn functionality provides dual opening modes that offer flexible ventilation options and convenient cleaning access for building occupants.
15+ Years of Experience
Proven expertise in aluminum window and door manufacturing.
Large Facility & Workforce
70,000 m² factory, 4,000 m² showroom, and over 600 employees.
High Production Capacity
Annual output of 400,000+ units, with 200,000+ successful installations.
International Certifications
Meets NFRC, CE, AS2047, CSA, and ISO9001 certification standards.
Strict Quality Inspection
Every product undergoes comprehensive quality checks before shipment.
Dedicated R&D Team
Over 20 professionals driving continuous product innovation.
Robust Intellectual Property
Holds over 100 national patents including inventions, designs, and appearances.
Industry Recognitions
Recipient of more than 50 prestigious industry awards.
Global Distributor Network
Over 700 distributors serving customers in 100+ countries.
One-Stop Service
Complete support from ordering through final delivery.
Certifications & Quality Standards
DERCHI E6N large casement windows meet international quality standards and safety regulations. Our comprehensive certifications demonstrate our commitment to manufacturing excellence and ensure reliable performance for your building projects.






E6N Big Size Tilt And Turn Casement Windows Hardware Options
The E6N large casement windows feature premium hardware components designed for aluminum swing windows. These hardware options ensure reliable operation, security, and durability for professional casement window manufacturers and end users.




Project Case Studies
Discover how DERCHI E6N large casement windows perform in real-world applications across residential and commercial projects. Our installations demonstrate proven durability, energy efficiency, and customer satisfaction in diverse building environments.

New York Apartment Project, USA
This is a project for DERCHI Windows and Doors in an apartment in New York. Enough to shock builders all over the world.
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Villa Project in Las Vegas, USA
This is a villa project of Guangdong Dejiyoupin Doors and Windows (Derchi) in Las Vegas, USA. The main products used are aluminum entry doors, aluminum slide doors, and aluminum glass fixed windows.
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USA Los Angeles 4242 Villa Aluminum Windows And Doors Project
Local Dealers and Popular Brands in Los AngelesDejiyoupin(Derchi) Windows and Doors in Los Angeles offers a wide selection of premium brands and emphasizes professional installation, energy efficiency, and soundproofing. Customer testimonials highlight their reliability and quality serviceDejiyoupin
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USA Los Angeles 4430 Villa Aluminum Windows And Doors Project
I think the American people living in Los Angeles will be familiar with Villa 4430. As a high-end villa complex, do you know that the aluminum doors and windows inside are all produced by Dejiyoupin Doors and Windows?
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Residential Door And Window Project in Los Angeles, USA
This is the project acceptance status of our DERCHI DOORS AND WINDOWS when we visited our customers in Los Angeles before going to the IBS exhibition in the United States in February 2025.
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Entire Villa in Pāhoa, Hawaii, United States Project
Let’s take a look at the case of DERCHI DOORS AND WINDOWS in Entire Villa in Pāhoa, Hawaii, United States.
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USA Los Angeles Villa Aluminum Windows And Doors Project
Why are the entry doors and sliding doors of DERCHI WINDOWS AND DOORS so popular in Los Angeles, USA?
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Aluminium Windows and Doors Whole House Customisation Project, USA
This is a project for DERCHI Windows and Doors in a villa in USA. Enough to shock builders all over the world.As China aluminum windows and doors manufacturer, DERCHI has always been a leader in the industry. Maybe their prices are not the cheapest, but their quality and technology are leading the w
/ Read MoreRelated Window Solutions
Explore our complete range of aluminum swing windows and casement window systems. DERCHI offers various sizes, configurations, and performance options to meet specific architectural requirements and building design needs.