The 72 casement window is a DERCHI custom thermal-break aluminum system window engineered for 72-inch (~1829mm) width openings. Unlike stock standard windows, every unit is made to size, with the S9 Starlight System as the primary recommended series and R8Y and E6N available for coastal safety and internal-opening applications.
- Width-segment product organized around 72-inch openings with multi-sash and fixed+opening combinations
- Three series options: S9 (outward, modern residential), R8Y (safety, coastal), E6N (internal-opening, tilt-and-turn)
- Custom glass, color, structure, and hardware configurations for project-specific requirements
Product Details
At the core of this product is a thermal-break aluminum system with a 109mm frame width, 1.8mm wall thickness, and 44/24/15mm multi-insulation strip configuration. The 1.8mm multi-cavity aluminum profile pairs with a three-seal structure and 44mm ultra-wide insulation strip to reduce thermal transfer, while a micro-elastic glass block minimizes glass corner stress. Frame and sash sit on the same horizontal line for a flush architectural appearance. At 72 inches wide, the system supports multi-sash, fixed+opening, and large-opening combination structures rather than a single sash.
Two alternative series extend the range for different project needs. The R8Y Ruixuan System features a 118mm frame with 35/34/16mm insulation strips, an anti-fall rope, and anti-theft screen for coastal and safety-focused applications. The E6N Xingyue System offers a 103mm frame, 2.0mm wall thickness, 35mm PA66 strip, and internal-opening tilt-and-turn operation with Vertical Isotherm Design and glue-injected corner cleats. Height is not fixed — buyers should provide opening dimensions and drawings for accurate sizing.
Product Features
- Thermal Break Engineering: The 44mm ultra-wide insulation strip and multi-cavity aluminum profile work together to reduce heat transfer, achieving thermal insulation rated 2.0W level 6 for energy-conscious projects.
- Weather Sealing: EPDM water-swelling weatherstrip combined with a three-seal structure delivers water tightness at 700Pa level 6, helping manage wind-driven rain in exposed installations.
- Acoustic Control: Standard 5+27A+5 double tempered insulating glass with fluorocarbon aluminum spacer contributes to sound insulation rated 35dB level 4 for noise-sensitive environments.
- Wind Load Capacity: Wind pressure resistance rated at 5kPa level 9 provides structural confidence for elevated installations and regions where wind exposure is a project concern.
- Safety Hardware System: S9 includes a custom child-safe handle, anti-pull angled transmission box, two-point lock, roller-sleeve lock points, and anti-pry strike plates for intrusion resistance and occupant protection.
- Configuration Versatility: The 72-inch width accommodates single sash, double sash, fixed+opening, side opening+center fixed, multi-grid window wall, and asymmetric layouts for varied architectural needs.
Customizable Styles
- Glass Options: Standard 5+27A+5 double tempered glass; optional argon gas, Low-E, laminated, frosted, tinted, ultra-clear, and blinds glass — request performance documents for specific configurations.
- Frame Profile: Thermal-break aluminum multi-cavity profiles available in S9 (109mm), R8Y (118mm), and E6N (103mm) frame widths with corresponding insulation strip configurations.
- Size Customization: Width organized at 72 inches (~1829mm); height is fully customizable — provide opening dimensions and project drawings for accurate manufacturing.
- Color and Finish: Twelve-plus standard colors including Sand Gray, Black Crystal, White, and Indigo Gray; finishes include powder coating, fluorocarbon, wood grain, and metallic flash silver.
- Opening Configuration: Outward casement, top-hung, and outward-opening top-hung for S9/R8Y; tilt-and-turn and inward casement for E6N — select based on ventilation and space requirements.
Hardware Accessories
- Handles: S9 features a custom child-safe handle; R8Y uses a WEHAG baseless handle; E6N pairs a WEHAG glass sash handle with a screen sash password handle for access control.
- Hinges: S9 includes a 13-inch casement friction hinge with custom load-bearing hinge; R8Y uses a 12-inch friction hinge — specific load ratings should be confirmed with supplier.
- Locking System: S9 uses an anti-pull angled transmission box with two-point lock and roller-sleeve lock points; R8Y features a custom black zinc alloy four-face six-point lock.
- Sealing Hardware: EPDM water-swelling weatherstrip forms the core of the three-seal structure, working with hidden drainage to manage water infiltration and air leakage.
- Safety Accessories: Optional protective guardrail, 48-mesh high-transparency screen, special steel wire mesh, and anti-fall rope (R8Y) — confirm availability for selected series.
Basic Parameters
| Performance Item | Available Information | Buyer Notes |
|---|---|---|
| Thermal Insulation | 2.0W level 6 (S9, R8Y); 7 levels (E6N) | Specific U-value for each glass configuration not provided — request detailed thermal performance data from supplier. |
| Wind Pressure Resistance | 5kPa level 9 (S9, R8Y) | Buyers in hurricane or high-wind zones should confirm this meets local structural code requirements. |
| Water Tightness | 700Pa level 6 (S9, R8Y) | Confirm whether this rating satisfies local building code for the project's exposure conditions. |
| Air Tightness | 1.2 level 8 (S9, R8Y) | Verify the testing standard used (GB, EN, or ASTM) for your target market compliance. |
| Sound Insulation | 35dB level 4 (S9, R8Y) | Confirm acoustic performance meets project specifications, especially for urban or highway-adjacent sites. |
Product Specifications
| Specification | S9 Starlight System | R8Y Ruixuan System | E6N Xingyue System |
|---|---|---|---|
| Product Type | Thermal-break outward casement window | Thermal-break outward casement window | Thermal-break internal-opening window |
| Frame Width | 109mm | 118mm | 103mm |
| Wall Thickness | 1.8mm | 1.8mm | 2.0mm |
| Insulation Strip | 44/24/15mm multi-strip | 35/34/16mm | 35mm PA66 |
| Standard Glass | 5+27A+5 fluorocarbon aluminum spacer | 5+27A+5 fluorocarbon aluminum spacer | 5+27A+5 fluorocarbon aluminum spacer |
| Opening Types | Outward casement, top-hung, outward top-hung | Outward casement, top-hung, outward top-hung | Tilt-and-turn, inward casement |
| Casement Sash Range | W 400-750mm, H 400-1500mm | Confirm with supplier | Confirm with supplier |
| Top-Hung Sash Range | W 510-750mm, H 700-1500mm | Confirm with supplier | Not applicable |
| Single Fixed Glass Max | 6 sqm | Confirm with supplier | Confirm with supplier |
| Product Width | 72 inches (~1829mm) — height customizable | ||
| Colors Available | 12+ standard colors, 8+ E5N card colors | ||
| Finishes | Powder coating, fluorocarbon, wood grain, metallic flash silver | ||
| Certifications | CE/NFRC/CSA, US/AU IGCC mentioned on official website — request actual certificate documents and verify validity | ||
| Customization | Made-to-size; structural combinations include single sash through 6-pane, multi-grid, pitched, hexagonal, and bay window | ||
Advantages
- System Window Engineering: Unlike generic aluminum windows, the 44mm ultra-wide insulation strip and multi-cavity profile deliver engineered thermal performance for energy-conscious projects.
- Three-Seal Weather Protection: EPDM water-swelling weatherstrip with three-seal structure and hidden drainage manages water infiltration and air leakage in exposed installations.
- Width-Segment Customization: The 72-inch width segment supports multi-sash, fixed+opening, multi-grid, and asymmetric combinations — engineered to project drawings, not stock sizes.
- Multi-Series Coverage: As a 72 casement window supplier, DERCHI covers modern residential outward opening, coastal safety, and internal-opening tilt-and-turn through three engineered series.
- Export Packaging System: Four-layer protection includes anti-scratch film, pearl cotton, waterproof outer film, and wooden rack with PE seawater-resistant film and airbag isolation for international shipping.
Application Scenarios
- Apartment: Multi-sash and fixed+opening combinations suit apartment living rooms where ventilation and natural light matter. S9 outward operation saves interior floor space while maintaining airflow for daily comfort.
- Home Office: Sound insulation rated 35dB level 4 helps reduce street and neighborhood noise, supporting focus in home workspaces. Tilt-and-turn E6N offers secure ventilation without fully opening the sash.
- Hotel: Guest room windows benefit from thermal-break performance and fluorocarbon finish durability. Custom color options allow frame finishes to match interior design palettes across multiple room types.
- Office Building: Commercial 72 casement window configurations with fixed+opening layouts serve office facades where daylighting and periodic ventilation are needed. Confirm wind pressure ratings for high-rise installations.
- Outdoor: For balconies or terraces, confirm water tightness (700Pa level 6) and wind resistance against local exposure conditions. R8Y with anti-fall rope and anti-theft screen may suit elevated outdoor settings.
- Residential Building: New-build projects can specify S9 for outward-opening units or E6N for internal-opening units. Made-to-size production accommodates varying opening dimensions across unit types within a single development.
- Exterior: Facade applications require verification of surface finish durability, water tightness, and wind pressure resistance for the specific climate. Confirm fluorocarbon or powder coating selection matches exposure requirements.
- Villa: Wide villa openings benefit from 72-inch width multi-sash combinations with optional guardrail and safety screen. Pitched, trapezoidal, and bay window structures are available for architectural character.
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 is the 72 casement window?
It is a DERCHI custom thermal-break aluminum system window organized around a 72-inch (~1829mm) width segment. The S9 Starlight System is the primary series, with R8Y and E6N as alternatives. Every unit is made to size, not stocked.
How do I choose between S9, R8Y, and E6N series?
S9 suits modern residential outward-opening applications. R8Y targets coastal or safety-focused projects with anti-fall rope and anti-theft screen. E6N offers internal-opening tilt-and-turn for high windows and project residential. Select based on opening direction and site conditions.
What glass configurations are available?
Standard glass is 5+27A+5 double tempered with fluorocarbon aluminum spacer. Optional upgrades include argon gas, Low-E, laminated, frosted, tinted, ultra-clear, and blinds glass. Request specific performance documents for U-value and SHGC data.
What information is needed for a quote?
Provide quantity, project drawings, opening dimensions, destination, and configuration details including series, glass type, color, opening style, and structural layout. Packaging and delivery preferences should also be specified for accurate pricing.
What certifications are available?
CE, NFRC, CSA, and US/AU IGCC glass certifications are mentioned on the official website. Buyers should request actual certificate documents and verify validity dates and applicable product models before relying on compliance for their target market.
What MOQ and lead time should I expect?
Platform data references an MOQ of approximately 2 square meters for 72 casement window wholesale, with delivery of 25-35 days. These are reference figures — confirm actual MOQ and lead time with supplier.
What should buyers confirm before ordering?
Confirm height dimensions (customizable, not fixed), U-value and SHGC for selected glass, certification validity, warranty terms, installation conditions, and jamb options. Also verify hardware brand specifications beyond WEHAG and shipping damage replacement policies.
