4 pane casement windows from DERCHI are custom thermal break aluminum outward casement windows built on the R8Y Ruixuan system. The 4-pane designation refers to a divided-lite system window where each lite can serve as fixed glazing, an opening vent, an inward flyscreen sash, or a safety protection grille — not four separate products or fixed dimensions. This safety-type outward casement system is engineered for coastal, typhoon, and heavy-rain scenarios.
- R8Y frame: 118mm width, 1.8mm wall thickness, 35/34/16mm insulation strips
- Standard glass: 5+27A+5 argon-filled fluorocarbon hollow aluminum strip
- Safety features include anti-fall rope (150KG), anti-theft flyscreen, and corner protector
- Opening sash range: width 350–750mm, height 450–1500mm; max single fixed glass 12sqm
Product Details
Custom 4 pane casement windows use a divided-lite architecture where each of the four panes takes an independent role — fixed glazing for unobstructed views, outward-opening vents for ventilation, inward flyscreen sashes for insect control, or safety protection grilles where fall prevention matters. The R8Y Ruixuan system carries a 118mm frame with 1.8mm wall thickness and 35/34/16mm insulation strips, paired with 5+27A+5 argon-filled fluorocarbon hollow aluminum strip glass as standard. Glass sashes open outward while flyscreen sashes open inward, and opening types include outward casement, top-hung, and outward-opening top-hung configurations.
Weather sealing relies on triple sealing, equal-pressure drainage, concealed drainage, and EPDM water-swelling weather strip — a combination suited to heavy-rain and coastal exposure. The 4-lite layout suits a 2x2 visual proportion and can be combined with 5-lite (center view glass plus side opening) or 6-pane (3x2 grid) layouts for larger openings. Buyers comparing series can also evaluate S6 (82mm frame, hidden folding flyscreen, project-oriented) and E0 (100mm frame, budget and batch engineering) as alternatives with matching performance ratings.
Product Features
- Safety Protection System: Anti-fall rope rated at 150KG, anti-theft flyscreen, anti-collision corner protector, and built-in diamond mesh pressure line work together for high-rise and family-safety applications where fall prevention is a code or design priority.
- Verified Weather Performance: Water tightness at 700Pa Class 6, air tightness at 1.2 Class 8, and wind pressure resistance at 5kPa Class 9 give buyers concrete ratings for coastal, typhoon, and heavy-rain project specifications.
- Thermal Efficiency: The 35mm super wide insulation strip combined with triple sealing and argon-filled glass delivers thermal insulation rated 2.0W Class 6, supporting energy-conscious building envelopes in varied climates.
- Acoustic Comfort: Sound insulation rated at 35dB Class 4 helps reduce external traffic and environmental noise, making the system suitable for urban residential and hospitality projects where occupant comfort matters.
- Hardware Innovation: WEHAG antibacterial handle with silver ion coating inhibits up to 99% of bacterial growth, while the patented four-side six-point lock and 100,000+ open-cycle hardware bring security and longevity to daily use.
- Divided-Lite Flexibility: Each pane in the 4-lite system can be independently configured as fixed glazing, opening vent, inward flyscreen sash, or safety grille — giving architects and developers layout freedom without switching product platforms.
Customizable Styles
- Glass Configuration: Options include argon gas, Low-E, laminated, frosted, tinted, ultra-clear, louvered, and PVDF/fluorocarbon hollow aluminum strip — buyers should confirm exact thickness parameters beyond standard 5+27A+5.
- Color and Finish: Choose from Sand Gray, Dark Coffee, Black Crystal, Starry Black, White, Black Walnut, Pear Wood, Fluorocarbon Flash Silver, Indigo Gray, Mint Gold, plus E5N card additions like Retro Green and Deep Sea Blue.
- Size Range: Opening sash width spans 350–750mm and height 450–1500mm; maximum single fixed glass area reaches 12 square meters. Confirm overall combined window dimensions for specific multi-lite layouts.
- Structural Layout: Configurations range from single sash and fixed+opening to dual-side opening with center fixed, three-segment, top transom, left-right asymmetric, multi-lite window-wall, pitched/trapezoidal, and hexagonal or bay-window combinations.
- Opening and Grid Pattern: Opening types include outward casement, top-hung, and outward-opening top-hung. Grid options cover 4-lite 2x2, 5-lite center view plus side opening, and 6-pane 3x2 traditional grille patterns.
Hardware Accessories
- WEHAG Handle: Available as baseless handle or antibacterial version with silver ion coating that inhibits up to 99% of bacterial growth — finish and color options should be confirmed with supplier before ordering.
- Friction Hinge: 12-inch friction hinge controls outward sash movement and holding position. Buyers should verify suitability for specific sash dimensions and local wind-load requirements.
- Four-Side Six-Point Lock: Custom black zinc alloy lock is a patented invention providing multi-point locking around the sash perimeter. Confirm compatibility with project security and hardware finish requirements.
- Anti-Fall Rope: Rated to bear up to 150KG, the anti-fall rope prevents sash drop in outward-opening installations. Buyers should confirm per-sash applicability and local building code compliance.
- Safety Mesh and Protectors: Built-in diamond mesh pressure line, anti-collision corner protector, and anti-theft flyscreen are included. S6 series offers hidden folding flyscreen as an alternative screen solution.
Basic Parameters
| Performance Item | Available Information | Buyer Notes |
|---|---|---|
| Thermal Insulation | 2.0W Class 6 | Confirm U-value unit and testing standard; 2.0W likely refers to W/m²·K |
| Wind Pressure Resistance | 5kPa Class 9 | Confirm testing standard and whether rating applies to all sizes and configurations |
| Water Tightness | 700Pa Class 6 | Confirm which testing standard this rating is based on (GB, EN, or AAMA) |
| Air Tightness | 1.2 Class 8 | Confirm the testing standard and units for the 1.2 value |
| Sound Insulation | 35dB Class 4 | Confirm acoustic test standard and glass configuration used for this rating |
Product Specifications
| Parameter | Details |
|---|---|
| Product Name | 4 Pane Casement Windows |
| Product Type | 4-pane divided-lite thermal break aluminum outward casement window |
| Brand | DERCHI |
| Main Series | R8Y Ruixuan system (alternatives: S6 Xinghai, E0 Glory) |
| Frame Material | Thermal break aluminum |
| Frame Width | 118mm (R8Y); 82mm (S6); 100mm (E0) |
| Wall Thickness | 1.8mm |
| Insulation Strip Widths | 35/34/16mm (R8Y) |
| Standard Glass | 5+27A+5 fluorocarbon hollow aluminum strip glass with argon gas |
| Glass Options | Low-E, laminated, frosted, tinted, ultra-clear, louvered, PVDF/fluorocarbon |
| Opening Types | Outward casement, top-hung, outward-opening top-hung |
| Opening Sash Range | Width 350–750mm, height 450–1500mm |
| Max Single Fixed Glass | 12 square meters |
| Sealing System | Triple sealing, EPDM water-swelling weather strip, equal-pressure and concealed drainage |
| Safety Components | Anti-fall rope (150KG), anti-theft flyscreen, corner protector, diamond mesh |
| Hardware | WEHAG handle, 12-inch friction hinge, patented four-side six-point lock |
| Surface Treatments | Powder coating, fluorocarbon, wood grain, metallic flash silver |
| Packaging | Four-layer: anti-scratch film, pearl cotton, waterproof film, wooden rack; export adds PE anti-seawater film and air bag isolation |
| Delivery Reference | Approximately 25–35 days (platform reference, subject to confirmation) |
| Customization | Custom sizes, colors, glass, and structural configurations available |
| Notes | Confirm certifications, warranty, installation documentation, and bulk lead time with supplier |
Advantages
- Safety-System Engineering: Anti-fall rope at 150KG, anti-theft flyscreen, and corner protector address high-rise and coastal safety requirements where building codes demand fall-prevention and weather protection features.
- Verified Performance Ratings: Water, air, sound, thermal, and wind pressure classes are all documented, giving specifiers concrete values for climate-driven project requirements rather than vague marketing claims.
- Patented Hardware Differentiation: The four-side six-point lock is a patented invention, and the WEHAG antibacterial handle with 99% bacterial inhibition offers a hygiene angle for healthcare and hospitality projects.
- Divided-Lite Configuration Freedom: Each pane can be fixed, opening, flyscreen, or safety grille independently, letting architects balance daylight, ventilation, and protection within a single window unit.
- Export-Ready Packaging: Four-layer protection with anti-scratch film, pearl cotton, waterproof film, and wooden rack — plus PE anti-seawater film and air bag isolation — supports overseas shipping and port delivery.
Application Scenarios
- Apartment: Urban apartments benefit from the 2x2 divided-lite layout for balanced daylight and ventilation. The outward-opening sash saves interior space, while the 35dB sound insulation rating helps manage street-level noise in dense neighborhoods.
- Home Office: Home offices requiring quiet concentration benefit from the 35dB acoustic rating and argon-filled thermal glass, which create a comfortable workspace. The inward flyscreen sash allows ventilation control without disrupting desk placement near the window.
- Hotel: Hospitality projects can leverage the WEHAG antibacterial handle with 99% bacterial inhibition as a hygiene differentiator. The patented six-point lock adds guest security, while custom color finishes match interior design schemes.
- Office Building: Commercial 4 pane casement windows suit office facades where large fixed glazing up to 12sqm combines with opening vents for natural ventilation. The multi-lite window-wall configuration supports curtain-wall-like visual continuity.
- Outdoor: For outdoor-facing installations, buyers should confirm water tightness (700Pa Class 6) and wind pressure resistance (5kPa Class 9) against local climate data. Surface finish durability under UV and salt exposure, plus installation conditions, should be verified before ordering.
- Residential Building: New residential developments can specify the R8Y safety system with anti-fall rope and anti-theft flyscreen as standard protection features. The divided-lite format adapts to varying unit layouts and window opening sizes across floor plans.
- Exterior: Exterior applications in coastal or typhoon-prone regions should confirm that EPDM water-swelling weather strip, triple sealing, and concealed drainage meet local building code requirements. Wind pressure ratings, surface finish weatherability, and installation mounting conditions should be validated for the specific site.
- Villa: Villa projects can use custom 4 pane casement windows with premium finishes like Black Walnut, Pear Wood, or Fluorocarbon Flash Silver to match architectural style. The 4-lite through 6-pane grid options offer design flexibility for varied room proportions.
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 pane" mean — is it four separate windows?
No. "4 pane" refers to a divided-lite system window where four lites are combined into one unit. Each lite can be independently configured as fixed glazing, opening vent, inward flyscreen sash, or safety protection grille.
What is the difference between R8Y, S6, and E0 series?
R8Y is the premium safety-type system with 118mm frame and 35/34/16mm strips. S6 (82mm frame) targets project windows with hidden folding flyscreen. E0 (100mm frame) serves budget and batch engineering. All share matching performance ratings.
What glass options are available beyond the standard configuration?
Verified options include argon gas, Low-E, laminated, frosted, tinted, ultra-clear, louvered, and PVDF/fluorocarbon hollow aluminum strip. Buyers should confirm exact thickness parameters beyond the standard 5+27A+5 with the supplier.
What information should I prepare for an accurate quote?
Provide quantity, destination port, drawings or opening dimensions, glass type, color finish, series selection (R8Y/S6/E0), opening combination, packaging preference, and any compliance document requirements. This helps the 4 pane casement windows supplier prepare a precise quotation.
What is the minimum order quantity?
The DERCHI/Dejiyoupin platform references a common MOQ of 2 square meters, but actual MOQ may vary by configuration. Buyers should confirm the applicable MOQ for their specific glass type, color, and project volume before ordering.
Are certifications like CE, AAMA, or NFRC available?
Specific certifications are not listed in current product data. Buyers requiring CE, AAMA, NFRC, or other compliance documents for project approval should request applicable test reports and certificates from the supplier during quotation.
What warranty and delivery terms apply?
Warranty terms are not specified in available data — buyers should request warranty period and conditions directly. Platform data references approximately 25–35 days delivery, but this is not a confirmed standard; bulk order lead time should be verified separately.
