





A 4 lite casement window is a divided lite system window, not a fixed dimension. Each of the four panes can be independently configured as fixed glazing, an opening ventilation sash, an inward screen, or a safety grid. The main product is the DERCHI R8Y Ruixuan system thermal break aluminum outward-opening casement window.
- 4-pane layout typically suits a 2x2 visual ratio, though arrangements are customizable.
- Glass sash opens outward; screen sash opens inward for flexible ventilation.
- Features triple sealing, equal-pressure drainage, and EPDM water-swelling weatherstrip.
Product Details
The R8Y Ruixuan system serves as the primary product for this configuration. It features a 118mm frame width, 1.8mm wall thickness, and 35/34/16mm thermal break strips. Standard glazing is 5+27A+5 fluorocarbon insulated aluminum spacer glass with argon. Opening types include outward, top-hung, and outward-opening top-hung. The frame integrates triple sealing, equal-pressure drainage, and concealed drainage to manage heavy rain exposure.
For projects with different budget tiers, the S6 Xinghai system (82mm frame, invisible folding screen) and E0 Honor series (100mm frame, curved arc craft option) serve as alternative profiles. All three series share identical performance ratings: 700Pa water tightness, 1.2 air tightness, 35dB sound insulation, 2.0W thermal insulation, and 5kPa wind pressure resistance. Buyers should confirm which profile One of the established options in its category supplier.
Product Features
- Patented Six-Point Lock: The custom black zinc alloy four-side six-point lock is an invention patent, providing multi-directional locking security for outward-opening sashes in residential and commercial buildings.
- Antibacterial Handle: WEHAG handle features a silver ion coating that can inhibit bacterial growth up to 99%, offering a hygienic contact surface for occupants in homes and hospitality settings.
- High-Rise Safety Rope: An integrated anti-fall rope bears weight up to 150KG, preventing sash drop in high-rise outward-opening applications and adding a critical layer of occupant protection.
- Hardware Durability: WEHAG hardware components are rated for 100,000+ open cycles, supporting long-term daily operation without frequent maintenance or component replacement in active spaces.
- Wide Thermal Strip: The 35mm super wide insulation strip combined with the thermal break system limits heat transfer, supporting energy efficiency in climates requiring temperature control.
- Coastal Sealing System: Triple sealing with EPDM water-swelling weatherstrip and concealed drainage manages water intrusion, making the frame suitable for coastal and heavy rain environments.
Customizable Styles
- Glass Configuration: Options include argon gas, PVDF/fluorocarbon insulated aluminum spacer, Low-E, laminated, frosted, tinted, ultra-clear, and built-in blind glass for varied light control.
- Frame and Size: Opening sash width ranges 350-750mm and height 450-1500mm; single fixed glass reaches 12sqm. Confirm maximum multi-lite combination dimensions during inquiry.
- Color and Finish: Choose from Sand Gray, Dark Coffee, Black Crystal, White, Black Walnut, Fluorocarbon Flash Silver, Mint Gold, and E5N card colors like Retro Green and Deep Sea Blue.
- Opening Configuration: Structural layouts include fixed+opening, two-side opening+middle fixed, top transom, left-right asymmetric, 4-lite, 5-lite, 6-pane, and shaped window combinations.
- Screen and Grid: Each lite independently functions as fixed glazing, ventilation sash, inward screen, or safety grid. S6 series offers an invisible folding screen alternative.
Hardware Accessories
- WEHAG Handle: Baseless handle design with an antibacterial silver ion coating option, rated for 100,000+ open cycles to support daily operational longevity.
- Friction Hinge: A 12-inch friction hinge controls outward sash movement, maintaining stable positioning under wind load without slamming.
- Six-Point Lock: Custom black zinc alloy four-side six-point lock secures the sash on multiple sides; recognized as an invention patent for structural security.
- Anti-Fall Rope: Integrated safety rope bears weight up to 150KG, preventing the opening sash from detaching in high-rise or elevated installations.
- Sealing and Mesh: Includes built-in diamond mesh pressure line, anti-theft flyscreen, and anti-collision corner protector for occupant safety and insect deterrence.
Basic Parameters
| Performance Item | Available Information | Buyer Notes |
|---|---|---|
| Thermal Insulation | 2.0W, Level 6 | U-value may vary with different glass configurations like Low-E or argon; confirm specific ratings. |
| Wind Pressure Resistance | 5kPa, Level 9 | Applies to R8Y, S6, and E0 series; buyers in hurricane zones should confirm local code compliance. |
| Water Tightness | 700Pa, Level 6 | Verify if regional standards require different testing methods for coastal project approval. |
| Air Tightness | 1.2, Level 8 | Applies to all three series; buyers should verify the referenced testing standard, likely Chinese GB. |
| Sound Insulation | 35dB, Level 4 | Confirm if higher acoustic performance is needed for specific commercial or hospitality projects. |
Product Specifications
| Specification | Details |
|---|---|
| Product Name | 4 Lite Casement Window (DERCHI R8Y Series) |
| Product Type | Thermal break aluminum outward-opening divided lite window |
| Frame Width | 118mm (R8Y); 82mm (S6); 100mm (E0) |
| Wall Thickness | 1.8mm across all series |
| Standard Glass | 5+27A+5 fluorocarbon insulated aluminum spacer glass with argon |
| Glass Options | Low-E, laminated, frosted, tinted, ultra-clear, built-in blind |
| Opening Sash Size | Width: 350-750mm; Height: 450-1500mm |
| Max Fixed Glass | 12 square meters per single panel |
| Hardware | WEHAG handle, 12-inch friction hinge, four-side six-point lock |
| Surface Finishes | Powder coating, fluorocarbon, wood grain, metallic flash silver |
| Color Options | Sand Gray, Dark Coffee, Black Crystal, White, Indigo Gray, Pearl White, etc. |
| Opening Style | Outward opening, top-hung, outward-opening top-hung |
| Customization | Custom sizes, colors, glass, and structural configurations available |
| Packaging | Four-layer protection: protective film, pearl cotton, outer film, wooden rack |
| Shipping | Door-to-door service or shipping to port available |
| Notes | MOQ of 2sqm is a platform reference; confirm specific MOQ and lead time for R8Y |
Advantages
- Safety System: Includes a 150KG anti-fall rope, anti-collision corner protector, anti-theft flyscreen, and a patented four-side six-point lock for occupant and property security.
- Weather Performance: 700Pa water tightness and 5kPa wind resistance, supported by triple sealing, EPDM water-swelling weatherstrip, and concealed drainage for heavy rain environments.
- Thermal Efficiency: Features a 35mm super wide insulation strip and thermal break system, achieving 2.0W thermal insulation level 6 to support energy control.
- Project Flexibility: Three series (R8Y, S6, E0) with varying frame widths accommodate different budget tiers, alongside extensive glass, color, and configuration customization.
- Export Readiness: Four-layer packaging with wooden rack, pallet fixation, PE seawater-proof film, and air bag isolation supports marine shipping; door-to-door or port delivery available.
Application Scenarios
- Apartment: The divided lite system allows upper panes to provide fixed daylighting while lower panes offer ventilation, balancing natural light and airflow in compact living spaces.
- Home Office: Sound insulation rated at 35dB helps reduce external traffic noise, creating a quieter indoor working environment for focused tasks and virtual meetings.
- Hotel: The WEHAG antibacterial handle with silver ion coating supports hygiene standards, while the custom color finishes match interior design themes in guest rooms.
- Office Building: A commercial 4 lite casement window configuration allows large glazed facades with fixed and operable sections, supporting natural light and fresh air for occupants.
- Outdoor: For outdoor-facing installations, buyers should confirm weather resistance, water tightness, and wind pressure ratings to ensure the frame withstands local environmental exposure.
- Residential Building: The anti-fall rope and anti-theft flyscreen address safety requirements for multi-story residential projects, providing secure outward-opening ventilation.
- Exterior: When used in exterior facades, verify surface finish durability against UV exposure and confirm installation conditions match the structural profile selected.
- Villa: Custom structural configurations, including top transoms and shaped window combinations, allow architectural flexibility to match distinct villa design requirements.
Inquiry Guidance
To request a quote, please share your project location, required size, quantity, preferred frame color, glass type, hardware requirements, and drawings or reference photos if available.
FAQ
What does '4 lite' mean on this casement window?
It refers to a 4-pane divided lite style, not a fixed width-height dimension. Each lite is independently configurable as fixed glazing, an opening ventilation sash, an inward screen, or a safety protection grid based on project needs.
How do I choose between the R8Y, S6, and E0 series?
R8Y features a 118mm frame for safety-focused applications. S6 offers an 82mm frame with an invisible folding screen, while E0 provides a 100mm frame with soundproof positioning. Confirm your budget and performance needs with the supplier.
What information do I need to provide for a quotation?
Please provide project quantity, opening size drawings, destination port, required glass configuration, color finish, and packaging preferences. This allows the supplier to calculate accurate pricing and lead times.
What is the minimum order quantity for 4 lite casement window wholesale?
Platform pages show a common reference of 2 square meters. However, buyers should confirm the specific MOQ for the R8Y series and project-scale 4 lite casement window wholesale orders before proceeding.
Are certifications like CE or AAMA available for this product?
Specific certifications are not mentioned in the current product data. Buyers should confirm which compliance documents their target market requires and request available test reports during the inquiry process.
Can specific U-value or SHGC ratings be provided for different glass types?
The standard thermal insulation is 2.0W (Level 6). Since U-values vary with glass configurations like Low-E or laminated options, buyers should request specific U-value and SHGC test data during inquiry.
What packaging and shipping options are available for bulk orders?
Products use four-layer packaging including anti-scratch film, pearl cotton, waterproof film, and wooden racks. Marine shipping includes PE seawater-proof film and air bag isolation. Door-to-door or port delivery is available.

