A 48 x 48 double casement window from DERCHI is a custom thermal break aluminum unit measuring approximately 1219 x 1219mm, with a total area of 1.49 square meters. It is built to project specifications, not stocked as a standard size.
- Primary recommendation: S9 Starlight System with a 109mm frame and 44mm wide insulation strip.
- Alternative series: R8Y for safety and coastal applications, E0 for budget-sensitive batch engineering.
- Configuration options include multiple glass types, over 20 colors, and various structural combinations.
Product Details
The double casement structure divides the 1219 x 1219mm opening into two opposing sashes, each averaging approximately 610mm (24.0in) in width. This layout provides balanced left-right ventilation and a symmetrical facade. The primary S9 Starlight System features a 109mm frame width, 1.8mm wall thickness, and a 44/24/15mm multi-insulation strip configuration. Standard glass is 5+27A+5 fluorocarbon insulating aluminum spacer double tempered glass. The glass sash opens outward, while an optional screen sash opens inward.
Buyers can configure a custom 48 x 48 double casement window by selecting from multiple structural combinations, including fixed and operable layouts, upper transoms, and asymmetric openings. For taller windows, an E6N double internal opening or upper fixed transom can reduce opening sash pressure. As a 48 x 48 double casement window manufacturer, DERCHI offers the R8Y Ruixuan System (118mm frame, WEHAG hardware, anti-fall rope) for coastal safety applications, and the E0 Glory Series (100mm frame, 48/88 edge wrapping) for budget and batch engineering.
Product Features
- Series-Level Performance: S9, R8Y, and E0 series share ratings of 700Pa water tightness and 5kPa wind pressure resistance, offering verified structural reliability for project specifications.
- Thermal Break Insulation: The S9 series uses a 44mm extra wide insulation strip and a 1.8mm multi-cavity aluminum profile to reduce thermal transfer across the frame.
- Multi-Point Hardware Security: Anti-pull inclined transmission boxes, roller-sleeve lock points, and anti-pry lock keepers help secure the double sashes against forced entry attempts.
- Glass Stress Reduction: A micro-elastic glass block system reduces corner stress on the double tempered glass, while the frame and sash remain on the same horizontal line.
- Coastal Safety Configuration: The R8Y series features equal-pressure drainage, hidden drainage channels, and an EPDM water-swelling seal strip for weather-exposed and coastal project applications.
- Acoustic Insulation: All three series carry a 35dB Class 4 sound insulation rating, supporting noise control requirements for residential and commercial buildings.
Customizable Styles
- Glass Options: Standard 5+27A+5 double tempered glass; upgrades include Low-E, argon gas, laminated, frosted, tinted, ultra-clear, and blinds glass.
- Frame and Color: Choose from 12 S9 colors and 8 E5N colors, with finishes including powder coating, fluorocarbon, wood grain, and metallic flash silver.
- Size Configuration: While the title size is 48x48in, casement opening sash ranges from 400-750mm width and 400-1500mm height can be customized to project drawings.
- Opening Style: Available in outward opening, top-hung, and outward-opening top-hung configurations, with glass sash opening outward and screen sash inward.
- Structural Layout: Configure as single sash, fixed+operable, three-segment, upper transom, left-right asymmetric, or hexagonal/bay window combinations.
Hardware Accessories
- Handles: S9 includes a DERCHI custom child-safe handle; R8Y uses a WEHAG baseless handle; optional fingerprint, password, and key handles are available.
- Friction Hinges: S9 features a 13-inch friction hinge, while R8Y uses a 12-inch friction hinge to control sash opening speed and outward movement.
- Locking System: S9 uses a two-point lock with roller-sleeve lock points; R8Y uses a custom black zinc alloy four-face six-point lock for enhanced security.
- Sealing Hardware: Both S9 and R8Y feature EPDM water-swelling seal strips that expand upon water contact to improve weather resistance.
- Optional Accessories: Buyers can add a 48-mesh high-transparency screen, steel wire mesh, guardrail, or blinds depending on project safety and shading requirements.
Basic Parameters
| Performance Item | Available Information | Buyer Notes |
|---|---|---|
| Thermal Insulation | 2.0W Class 6 (S9/R8Y/E0) | Specific U-value varies with glass configuration; request test data for Low-E or argon upgrades. |
| Wind Pressure Resistance | 5kPa Class 9 (S9/R8Y/E0) | Confirm structural test ratings apply to this specific 48x48 size configuration before ordering. |
| Water Tightness | 700Pa Class 6 (S9/R8Y/E0) | Verify performance ratings and test standards for the exact 48x48 size with supplier. |
| Air Tightness | 1.2 Class 8 (S9/R8Y/E0) | Request specific air infiltration rate values per test standards for project compliance verification. |
| Sound Insulation | 35dB Class 4 (S9/R8Y/E0) | Request acoustic performance test report numbers and test standards used for verification. |
Product Specifications
| Specification | S9 Starlight System | R8Y Ruixuan System | E0 Glory Series |
|---|---|---|---|
| Title Size | 48 x 48 in (1219 x 1219mm), approx. 1.49 sqm total area | ||
| Double Sash Width | Approx. 24.0in / 610mm per sash | ||
| Frame Width | 109mm | 118mm | 100mm |
| Wall Thickness | 1.8mm | 1.8mm | 1.8mm |
| Insulation Strip | 44/24/15mm | 35/34/16mm | 35/30/12mm |
| Standard Glass | 5+27A+5 fluorocarbon insulating aluminum spacer | ||
| Opening Range | Casement: W 400-750mm, H 400-1500mm; Top-hung: W 510-750mm, H 700-1500mm | ||
| Max Fixed Glass Area | 6 sqm | ||
| Hardware | Child-safe handle, 13-in hinge, 2-point lock | WEHAG handle, 12-in hinge, 6-point lock | Confirm with supplier |
| Structural Test Reports | Confirm with supplier for this specific 48x48 configuration | ||
Advantages
- Balanced Ventilation: Double sash opposing opening provides balanced left-right airflow and a symmetrical facade aesthetic for architectural projects.
- Three-Tier Series Selection: A single manufacturer covers high-end (S9), safety (R8Y), and budget (E0) market segments, simplifying project specification across different building types.
- Structural Consistency: All series feature a 1.8mm multi-cavity aluminum profile, providing consistent structural strength across different budget tiers.
- Export-Ready Packaging: Four-layer protection includes anti-scratch film, pearl cotton, waterproof outer film, and a fully enclosed wooden frame for safe international shipping.
- Project Customization: Custom sizes, colors, and glass configurations support commercial 48 x 48 double casement window requirements; door-to-door or port delivery available.
Application Scenarios
- Apartment: The double sash layout fits apartment openings requiring balanced ventilation. Confirm specific installation conditions and jamb options with the supplier before finalizing the order.
- Home Office: Sound insulation rated at 35dB Class 4 helps manage street noise in home office environments. Request acoustic test reports to verify performance for the exact 48x48 size.
- Hotel: Hotels can specify the S9 series with custom child-safe handles and fingerprint/password access hardware. Verify that selected hardware configurations meet local hospitality safety codes.
- Office Building: For commercial facades, the configurable multi-pane window wall combinations allow flexible daylighting. Confirm structural test ratings for large-size configurations and building code compliance.
- Outdoor: The R8Y series offers equal-pressure drainage and an anti-fall rope for weather-exposed locations. Buyers must confirm water tightness and wind pressure ratings apply to the specific installation environment.
- Residential Building: Batch residential projects can utilize the E0 Glory Series for budget-sensitive procurement. Confirm production capacity and lead time for bulk orders with the supplier.
- Exterior: Exterior applications benefit from the three-seal structure and EPDM water-swelling seal strip. Always verify surface finish durability and weather resistance for the target climate before ordering.
- Villa: Villas can leverage the S9 Starlight System with 44mm insulation strips and premium finishes like Black Walnut or Fluorocarbon Flash Silver. Confirm custom RAL color matching availability for project consistency.
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
Is this a stock window or a custom product?
This is explicitly a custom DERCHI thermal break aluminum window, not a stock standard window. All sizes, colors, and glass configurations are manufactured to project specifications.
Which series should I choose for my project?
Select S9 for high-end residential, R8Y for safety and coastal applications requiring anti-fall ropes, and E0 for budget-sensitive batch engineering. Confirm specific performance ratings with the supplier.
What information is needed for a quote?
Provide size, glass type, color/finish, hardware selection, quantity, delivery destination, drawings, and packaging requirements. This ensures accurate pricing for your specific 48 x 48 double casement window wholesale or project order.
What certifications are available?
CE, NFRC, CSA, and US/AU IGCC glass certifications are mentioned on the official website. Request actual certificate documents, certificate numbers, and issuing bodies for verification before project submittal.
Can I get test reports for this specific 48x48 size?
Performance ratings are series-level. Request confirmation and test reports verifying that the water, air, sound, and wind ratings apply to this exact 48x48 configuration and your chosen glass type.
What is the delivery time and MOQ?
Platform materials reference approximately 25-35 days delivery and a common MOQ of 2 square meters. Confirm both details with the production team for your specific order configuration and region.
What warranty terms apply?
Warranty terms and coverage periods are not currently documented. Request the official warranty policy from the supplier to confirm coverage before placing your order.
