





A custom 60 x 40 casement window from DERCHI provides thermal-break aluminum framing for residential and commercial projects. Built around the S9 Starlight System, this 60 x 40 in (1524 x 1016 mm) opening is engineered for modern facades.
- Custom-built product, not a stock standard window
- Recommended three-lite layout for balanced ventilation and views
- Multi-series selection (S9, S6, E0) for different project tiers
Product Details
The 60 x 40 casement window covers 1524 x 1016 mm (~1.55 sqm). A single sash at this width is structurally inadvisable, so a three-lite configuration is recommended, yielding three ~20 in (508 mm) divisions. This layout pairs a center fixed pane for unobstructed views with side outward casement sashes for ventilation. A two-sash option yields ~30 in (762 mm) per sash.
The primary S9 series features a 109 mm frame, 1.8 mm wall thickness, and a 44/24/15 mm multi-insulation strip configuration. Standard glass is 5+27A+5 fluorocarbon insulated tempered glass. Glass sashes open outward while screen sashes open inward. For different project economics, the S6 series (82 mm frame, invisible folding screen) and E0 series (100 mm frame, budget-friendly) share the same performance grades but suit different cost tiers.
Product Features
- Multi-Cavity Aluminum Profile: The 1.8 mm wall thickness provides structural rigidity for large openings, supporting multi-sash combinations without frame deflection.
- 44mm Ultra-Wide Insulation Strip: S9 series incorporates extra-wide thermal strips to reduce U-value and improve energy efficiency in heated or cooled spaces.
- Three-Seal Weatherstripping: EPDM water-swellable weatherstrip creates a progressive barrier against rain and drafts, improving weather tightness.
- Micro-Elastic Glass Block: This component reduces glass corner stress, accommodating thermal expansion and minimizing the risk of seal failure over time.
- Flush Frame and Sash Design: Frame and sash sit on the same horizontal line, delivering a clean, modern aesthetic suitable for contemporary architectural facades.
- Security Hardware Suite: Includes a child-safe handle, anti-pull-out transmission box, two-point lock, and anti-pry keeper to restrict forced entry and improve safety.
Customizable Styles
- Glass: Standard 5+27A+5 insulated tempered glass; custom options include Low-E, argon gas, laminated, frosted, tinted, ultra-clear, and blinds glass.
- Color and Finish: Available in Sand Gray, Black Crystal, White, Black Walnut, Fluorocarbon Flash Silver, and more; finishes include powder coating, fluorocarbon, and wood grain.
- Size and Sash Layout: Custom sizes supported; casement sash range 400-750 mm wide, 400-1500 mm high; top-hung range 510-750 mm wide, 700-1500 mm high.
- Opening Configuration: Choose from outward casement, top-hung, fixed plus opening, side opening plus center fixed, or upper/lower transom layouts.
- Project Customization: Special shapes like slanted-top, trapezoidal, hexagonal, and bay window combinations are available; confirm engineering feasibility with DERCHI.
Hardware Accessories
- Handle: S9 uses a German-technology custom child-safe handle; S6 features a WEHAG baseless handle; optional fingerprint/password/keyed handle available.
- Hinge: S9 includes a 13-inch casement friction hinge and custom load-bearing hinge for controlled outward opening.
- Locking System: Features an anti-pull-out angled transmission box, two-point lock, roller-sleeve lock point, and anti-pry lock keeper.
- Screen Options: 48-mesh high-transparency screen, stainless steel wire mesh, or invisible folding screen (S6) available.
- Sealing Hardware: EPDM water-swellable weatherstrip integrated into the sash system; optional guardrail available for safety compliance.
Basic Parameters
| Performance Item | Available Information | Buyer Notes |
|---|---|---|
| Thermal Insulation | 2.0W, Grade 6 | Buyers should confirm the exact U-value in W/m²·K for their specific glass configuration. |
| Wind Pressure Resistance | 5kPa, Grade 9 | Confirm this meets local building code requirements for the installation zone. |
| Water Tightness | 700Pa, Grade 6 | Verify this applies to the specific configuration and local weather exposure. |
| Air Tightness | 1.2, Grade 8 | Confirm the testing standard used (e.g., GB, EN, ASTM) for project compliance. |
| Sound Insulation | 35dB, Grade 4 | Confirm if this meets project acoustic requirements and request international testing. |
Product Specifications
| Specification | Details |
|---|---|
| Product Name | 60 x 40 Casement Window |
| Product Type | Thermal-break aluminum custom casement window |
| Title Size | 60 x 40 in (1524 x 1016 mm), ~1.55 sqm |
| Recommended Layout | Three-lite (each ~20 in / 508 mm) or two-sash (each ~30 in / 762 mm) |
| S9 Frame Width | 109 mm |
| Wall Thickness | 1.8 mm (S9, S6, E0) |
| Glass Type | 5+27A+5 fluorocarbon insulated aluminum spacer glass (standard) |
| Opening Style | Outward casement, top-hung, outward-opening top-hung |
| Sash Direction | Glass sash opens outward; screen sash opens inward |
| Max Fixed Glass Area | 6 square meters |
| Certifications | CE/NFRC/CSA and US/AU IGCC emphasized on official website; request certificate copies for verification |
| Packaging | Four-layer: anti-scratch film, pearl cotton, waterproof film, wooden rack |
| Delivery Time | Approximately 25-35 days (platform reference only; confirm at inquiry) |
| Notes | Not a stock standard window; custom-built to project specifications |
Advantages
- Optimized Three-Lite Layout: Center fixed glass provides unobstructed landscape views while side casement sashes handle ventilation, avoiding structural issues of an oversized single sash.
- Multi-Series Strategy: S9 for high-end facades, S6 for project windows with invisible screens, and E0 for budget-sensitive batch residential, all sharing identical performance grades.
- Thermal-Break Engineering: Combines a 44 mm ultra-wide insulation strip, multi-cavity profile, and three-seal structure to reduce energy transfer and improve efficiency.
- Export-Ready Packaging: Four-layer protection including anti-scratch film, pearl cotton, waterproof outer film, and wooden rack; PE seawater-resistant film available for maritime shipping.
- Customization Depth: Over 12 color options, 5 finish types, 10+ structural combinations, and 7+ glass options available to match specific architectural requirements.
Application Scenarios
- Apartment: The three-lite configuration suits apartment living rooms needing natural light and cross-ventilation without sacrificing security or interior floor space.
- Home Office: Outward-opening sashes keep the workspace uncluttered, while insulated glass helps maintain a quiet environment for focused work.
- Hotel: A commercial 60 x 40 casement window offers hotel guests sound insulation and climate control, with custom finishes matching interior design themes.
- Office Building: Fixed center panes maximize exterior views for workstations, while side vents allow controlled fresh air intake for tenant comfort.
- Outdoor: For exposed installations, buyers should confirm wind pressure resistance, water tightness, and surface finish durability against local weather conditions.
- Residential Building: The E0 series supports batch residential projects requiring thermal-break double glazing at a budget-conscious price point.
- Exterior: When used on exterior facades, verify that the fluorocarbon or powder coating finish meets local climate resistance and installation conditions.
- Villa: The S9 series fits high-end villa facades, offering flush frame aesthetics and multi-sash combinations for large architectural openings.
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
Why is the 60 x 40 casement window recommended as a three-lite layout?
A single sash at 1524 mm wide is structurally inadvisable. The three-lite layout gives a center fixed pane for views and side casement sashes for ventilation, balancing performance and aesthetics.
What is the difference between the S9, S6, and E0 series?
They differ in frame width, insulation strip dimensions, and hardware. S9 is high-end (109 mm frame), S6 is lightweight (82 mm frame), and E0 is budget-focused (100 mm frame). All share the same performance grades.
What glass options are available for this custom 60 x 40 casement window?
Standard glass is 5+27A+5 insulated tempered. Custom options include argon gas, Low-E, laminated, frosted, tinted, ultra-clear, and blinds glass. Confirm performance documents for each upgrade.
What information is needed for a quote?
Provide quantity, destination port or address, drawings, series selection, glass type, color/finish, hardware, structure, and packaging requirements for an accurate quotation.
What certifications does DERCHI hold?
CE/NFRC/CSA and US/AU IGCC glass certifications are emphasized on the official website. Buyers should request actual certificate copies and verify validity for their specific product configuration.
What is the MOQ and reference pricing for 60 x 40 casement window wholesale?
A common MOQ of 2 sqm is noted on the platform. Reference prices range from 79-109 USD/sqm. These are reference only; final pricing depends on configuration, quantity, and destination.
What should buyers confirm before ordering?
Confirm exact U-values, STC ratings, warranty terms, production capacity, and shipping costs. Request installation instructions, shop drawings, and test reports for your target market.

