





DERCHI 6 casement windows are organized as a thermal break aluminum project package where each of the six units can be configured independently. Buyers can mix series — S6 as the primary option, with E0 and S9 as alternatives — while keeping color, glass, and packaging unified across the entire order.
- Thermal break aluminum construction with 1.8mm wall thickness across S6, E0, and S9 series
- Standard 5+27A+5 fluorocarbon hollow aluminum strip tempered glass, upgradeable to Low-E, argon, laminated, or frosted
- Germany WEHAG hardware with 100,000+ open cycles on S6; invisible folding fiberglass screen standard
- Quadruple protective packing for export: anti-scratch film, pearl cotton, waterproof film, wooden frame
Product Details
The S6 series serves as the primary configuration, featuring an 82mm frame width with 1.8mm aluminum wall thickness and thermal break strips measuring 35mm (frame), 14.8mm (sub-frame), and 30mm (sash). Opening methods include outward casement, top-hung, and outward top-hung, with the glass sash opening outward and an invisible folding screen integrated into the frame. Standard glazing is 5+27A+5 fluorocarbon hollow aluminum strip tempered glass, with a maximum single fixed glass area of 9 square meters.
Two alternative series are available within the same order. The E0 series offers a 100mm frame with 35/30/12mm thermal break strips and optional 48/88 wrap edges with curved top detail. The S9 series features a 109mm frame with 44/24/15mm multi-thermal break configuration. All three series share identical verified performance ratings. For custom 6 casement windows, R8Y, E5N, and E6N series are also selectable, but buyers should request technical datasheets before specifying parameters.
Product Features
- WEHAG Hardware: Germany WEHAG baseless handle rated for 100,000+ open cycles with high load-bearing capacity, standard on S6 series units for long-term operational reliability.
- Invisible Folding Screen: 0.2mm fiberglass filament screen disappears into the frame when closed and occupies no interior space when opened, keeping rooms uncluttered.
- Three-Way Sealing: Three-way sealing strip technology creates multiple weather barriers, contributing to verified 700Pa water tightness and level 8 air tightness ratings.
- PVDF Aluminum Spacer: Fluorocarbon hollow aluminum spacer in the 5+27A+5 double glazing unit helps maintain stable thermal performance and consistent edge sealing.
- Quadruple Export Packing: Four-layer protection — anti-scratch film, wear-resistant pearl cotton, waterproof outer film, and fully enclosed wooden frame — safeguards units during international shipping.
- Multi-Series Flexibility: Commercial 6 casement windows orders allow each unit to use a different series (E0/S6/S9) while maintaining unified color, glass, and packaging.
Customizable Styles
- Glass: Base 5+27A+5 tempered glass; upgradeable to argon gas, Low-E, laminated, frosted, tinted, ultra-clear, or integrated blinds glass per unit.
- Color and Finish: Twelve verified colors including Sand Gray, Dark Coffee, Black Crystal, White, and Indigo Gray; finishes in powder spray, fluorocarbon, wood grain, or metal flash silver.
- Structure: Single or double sash, fixed-plus-opening, two-side opening with center fixed, three-segment, top transom, asymmetric, 4-lite, 6-pane, trapezoidal, or bay-style combinations.
- Opening Method: Outward casement, top-hung, or outward top-hung; glass sash opens outward with invisible folding screen on S6, inward screen on E0 and S9.
- Per-Unit Series: As a 6 casement windows manufacturer, DERCHI allows each unit to select from E0, S6, S9, R8Y, E5N, or E6N with unified finish and packaging.
Hardware Accessories
- Handle (S6): Germany WEHAG baseless handle with high load-bearing capacity and 100,000+ open cycle rating, standard on S6 series units.
- Handle (S9): DERCHI custom child-safe handle with optional fingerprint, password, or key-operated handle upgrades for security-sensitive installations.
- Hinge and Lock (S9): 13-inch casement friction hinge paired with custom lock points and lock seats, engineered for stable outward opening.
- Invisible Folding Screen: 0.2mm fiberglass filament screen with hidden frame when closed and zero space occupation when opened, standard across all units.
- Optional Accessories (S9): 48-mesh high-transparency screen, steel wire mesh, guardrail, and blinds available; confirm availability for E0 and S6 configurations.
Basic Parameters
| Performance Item | Available Information | Buyer Notes |
|---|---|---|
| Thermal Insulation | 2.0W, level 6 (S6/E0/S9) | Confirm whether Low-E or argon gas upgrade is needed for local energy standards. |
| Wind Pressure Resistance | 5kPa, level 9 (S6/E0/S9) | Confirm project-site wind pressure classification and building code requirements before specifying series. |
| Water Tightness | 700Pa, level 6 (S6/E0/S9) | Verify against local rainfall intensity and exposure category for the installation. |
| Air Tightness | 1.2, level 8 (S6/E0/S9) | Confirm whether local building energy codes require additional air sealing measures. |
| Sound Insulation | 35dB, level 4 (S6/E0/S9) | For higher acoustic requirements, discuss laminated glass or alternative glazing configurations with supplier. |
Product Specifications
| Specification | Details |
|---|---|
| Product Name | DERCHI Thermal Break Aluminum Casement Window (6-Unit Project Package) |
| Product Type | Casement window, outward opening, thermal break aluminum |
| Material | Thermal break aluminum, 1.8mm wall thickness |
| Glass Type | 5+27A+5 fluorocarbon hollow aluminum strip tempered glass (standard) |
| Glass Thickness | 5+27A+5 double glazing; argon gas available on sample configuration |
| Frame Option | S6: 82mm / E0: 100mm / S9: 109mm frame width |
| Hardware | S6: WEHAG baseless handle; S9: custom child-safe handle, 13-inch friction hinge |
| Opening Style | Outward casement, top-hung, outward top-hung |
| Size Range (S6) | Casement: W 400-750mm × H 400-1500mm; Top-hung: W 510-750mm × H 700-1500mm |
| Max Fixed Glass | 9 sqm (S6 verified); request limits for E0/S9 |
| Application | Bathroom, bedroom, living room, staircase, facade windows |
| Customization | Glass, color, structure, hardware, and per-unit series selection |
| Packaging | Anti-scratch film, pearl cotton, waterproof film, wooden frame; PE anti-seawater film optional |
| MOQ | Platform reference: 2 sqm; confirm with supplier for project orders |
| Lead Time | Platform reference only (~25-35 days); not a confirmed commitment — verify with supplier |
| Notes | R8Y/E5N/E6N series available; request technical datasheets before specifying parameters |
Advantages
- Mixed-Series Flexibility: Six units can use different systems (E0/S6/S9) within one order while maintaining unified color, glass, and packaging for simplified logistics.
- Performance Parity: All three verified series share identical ratings — 700Pa water tightness, 35dB sound insulation, 5kPa wind resistance — from budget to upper-tier.
- Hardware Durability: WEHAG hardware rated for 100,000+ open cycles provides long-term operational reliability; confirm warranty terms with supplier before ordering.
- Export-Ready Packaging: Quadruple protection with anti-scratch film, pearl cotton, waterproof film, and wooden frame; PE anti-seawater film and pallet fixation available for ocean freight.
- Delivery and Sourcing: As a 6 casement windows supplier, DERCHI offers door-to-door or port delivery; confirm lead time and capacity for project-specific schedules.
Application Scenarios
- Apartment: Space-conscious apartment projects benefit from the S6 series invisible folding screen that occupies no interior space, making it suitable for rooms where wall clearance is limited.
- Home Office: Home office installations can use E0 series windows with soundproof double glazing positioning to reduce external noise, supporting a quieter work environment without requiring oversized frames.
- Hotel: Hotel projects requiring consistent facade appearance across multiple room types can use the 6-unit package with unified color and finish while varying glass configurations per room function.
- Office Building: Commercial 6 casement windows orders for office buildings can combine fixed and opening sashes across multiple units, allowing natural ventilation and daylighting while maintaining a uniform exterior aesthetic.
- Outdoor: For outdoor-exposed installations, buyers should confirm water tightness (700Pa rated), wind pressure resistance (5kPa rated), and surface finish durability against local climate conditions before finalizing the configuration.
- Residential Building: New residential developments can mix E0 for budget-sensitive units, S6 for mid-range rooms, and S9 for upper-tier corner units — all delivered under one unified package.
- Exterior: Exterior facade applications require verification of weather resistance, sealing performance, and aluminum profile finish; confirm that the selected color and coating process meet local UV and moisture exposure standards.
- Villa: Villa projects often need asymmetric openings or bay combinations; the S9 series with 109mm frame supports these architectural requirements for 6 casement windows wholesale orders.
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 included in the 6 casement windows package?
The package includes six independently configurable thermal break aluminum casement window units. Each unit can use a different series (S6, E0, or S9) with its own size, glass, and opening method, while color and packaging remain unified.
Can each unit have different sizes and opening directions?
Yes. Each unit is configured separately — specify different dimensions, series, glass types, and opening directions (left or right, outward casement or top-hung) for each window within the same order.
What information should I provide for an accurate quote?
Provide quantity per unit, series per unit, dimensions or drawings, glass type, color, opening method, destination, and packaging requirements. Project drawings help ensure precise pricing from the 6 casement windows manufacturer.
Are CE, NFRC, or CSA certifications available?
The S9 series page references CE, NFRC, CSA, and IGCC glass certifications. Buyers should confirm current validity and applicable configurations before relying on them for project compliance.
What is the lead time for a 6-unit order?
Platform materials reference approximately 25-35 days, but this is not a confirmed commitment. Confirm lead time with the supplier based on your configuration, series mix, and destination.
Is warranty documentation available?
Warranty terms are not yet documented. Request written coverage for aluminum profiles, glass units, hardware, and surface finish before ordering, and confirm whether terms differ by series.
Can I request test reports or compliance documents?
Yes. Request available test reports and technical datasheets for project approval. For R8Y, E5N, and E6N series, request datasheets before specifying parameters, as only S6, E0, and S9 have verified specs.

