6 foot casement windows from DERCHI are custom thermal-break aluminum windows built for 72-inch (1829mm) width openings. The primary recommended configuration uses the S9 Starlight System, an outward-opening casement series with a 109mm frame and 44mm ultra-wide insulation strip. This is a made-to-size product — not a fixed-height stock window — so buyers specify the height, sash layout, glass type, and finish to match their project drawings.
- Width-specific custom sizing at approximately 72 inches with multi-sash and fixed-plus-operable configurations
- Three DERCHI series available: S9 for standard residential, R8Y for coastal safety, E6N for inward-opening projects
- Verified performance ratings including water tightness 700Pa, wind pressure resistance 5kPa, and sound insulation 35dB
Product Details
The S9 Starlight System serves as the primary series, featuring a 109mm frame, 1.8mm wall thickness, and 44/24/15mm multi-insulation strip configuration. Standard glass is 5+27A+5 fluorocarbon insulated aluminum spacer; whether tempering is standard or optional should be confirmed before ordering. The S9 opens outward via casement, top-hung, or outward-opening top-hung, with the glass sash opening outward and the screen sash inward. Two alternative series cover additional conditions: R8Y Ruixuan (118mm frame, 35/34/16mm strip) targets coastal and typhoon-prone environments with anti-fall ropes and anti-theft screens, while E6N Xingyue (103mm frame, 2.0mm wall, 35mm strip) supports inward tilt-and-turn for taller openings and project residential use.
At 72 inches wide, the opening is typically divided into double-sash, three-sash, fixed-center-with-two-side-operable, or upper/lower fixed transom configurations. The S9 casement sash range spans 400–750mm wide × 400–1500mm high, with a maximum single fixed glass area of 6 square meters. This flexibility lets a 6 foot casement windows manufacturer adapt the same width to bathroom ventilation, bedroom windows, wide double-sash units, or large combination openings. Buyers should provide project drawings so the supplier can confirm sash dimensions, structural feasibility, and glass area limits.
Product Features
- Thermal Insulation Structure: The S9 uses a 44mm ultra-wide insulation strip paired with a multi-cavity aluminum profile and three-seal structure, working together to lower U-value and reduce thermal bridging across the frame.
- Safety Hardware Suite: Child-safe handles, anti-pull angled transmission boxes, two-point locks, roller-sleeve lock points, and anti-pry keepers provide layered security across the S9 series for residential and commercial occupant protection.
- Opening Direction Flexibility: S9 and R8Y offer outward casement, top-hung, and outward-opening top-hung options, while E6N supports inward tilt-and-turn — giving buyers multiple ventilation strategies for different room layouts and climate conditions.
- Weather Sealing System: EPDM water-swelling weatherstripping combined with hidden drainage (R8Y and E6N) and equal-pressure drainage (R8Y) manages water intrusion during heavy rain and wind-driven weather events across different installation conditions.
- Structural Stress Reduction: The micro-elastic glass block and frame-sash coplanar design reduce glass corner stress, helping large fixed panels maintain structural integrity under thermal expansion and wind load.
- Configuration Adaptability: The 72-inch width supports single sash, double sash, fixed-plus-operable, asymmetric, and multi-grid layouts — allowing the same product to serve bathroom, bedroom, and large-opening combination applications.
Customizable Styles
- Glass Options: Choose from argon gas, Low-E, laminated, frosted, tinted, ultra-clear, blinds glass, and PVDF/fluorocarbon insulated aluminum spacers to match thermal, privacy, and acoustic project requirements.
- Frame and Profile: S9 (109mm/1.8mm), R8Y (118mm/1.8mm), and E6N (103mm/2.0mm) offer distinct frame widths and wall thicknesses — select based on structural, safety, and opening-direction needs.
- Size and Sash Layout: For custom 6 foot casement windows, provide required height and opening dimensions; the 72-inch width splits into double-sash, three-sash, fixed-center, asymmetric, or multi-grid configurations per project drawings.
- Color and Finish: Available colors include Sand Gray, Dark Coffee, Black Crystal, Starry Black, White, Black Walnut, Pear Wood, Indigo Gray, and Mint Gold with powder coating, fluorocarbon, or wood grain surfaces.
- Opening Type and Screen: Select outward casement, top-hung, or outward-opening top-hung (S9/R8Y), or inward tilt-and-turn (E6N); screen options include 48-mesh high-transparency and special steel wire mesh.
Hardware Accessories
- Handle: S9 uses DERCHI custom child-safe handles; R8Y uses WEHAG baseless handles; E6N uses WEHAG baseless glass sash handles with screen sash password handles; optional fingerprint/password/key handles available.
- Friction Hinges: S9 features 13-inch casement friction hinges while R8Y uses 12-inch friction hinges — both provide controlled opening speed and hold the sash at adjustable angles.
- Lock System: S9 includes two-point locks, roller-sleeve lock points, and anti-pry lock keepers; R8Y uses a custom black zinc alloy four-face six-point lock for multi-directional sash securing.
- Transmission and Load Bearing: S9 incorporates an anti-pull angled transmission box and custom load-bearing hinges to manage sash weight and prevent forced entry through the hardware mechanism.
- Sealing and Safety Accessories: EPDM water-swelling weatherstripping provides the primary seal; optional guardrails, safety screens, and anti-fall ropes (R8Y) add occupant protection for elevated or coastal installations.
Basic Parameters
| Performance Item | Available Information | Buyer Notes |
|---|---|---|
| Thermal Insulation | 2.0W (Level 6) — S9/R8Y confirmed; E6N exact U-value not provided | Request exact U-value (W/m²·K) and confirm whether Low-E/argon is required to achieve this rating. |
| Wind Pressure Resistance | 5kPa (Level 9) — S9/R8Y confirmed | Confirm whether this rating applies to full 72-inch width multi-sash configurations or standard test sizes. |
| Water Tightness | 700Pa (Level 6) — S9/R8Y confirmed | Confirm test standard used (e.g., GB/T 7106) and applicability to large-opening combinations. |
| Air Tightness | 1.2 (Level 8) — S9/R8Y confirmed | Verify the test standard and whether ratings apply to the specific sash configuration being ordered. |
| Sound Insulation | 35dB (Level 4) — S9/R8Y confirmed | Confirm if this rating requires specific glass such as laminated or double tempered configurations. |
Product Specifications
| Parameter | Details |
|---|---|
| Product Name | 6 foot casement windows (72-inch / 1829mm width) |
| Product Type | Custom thermal-break aluminum casement window (made-to-size) |
| Material | Multi-cavity thermal-break aluminum profile |
| Standard Glass | 5+27A+5 fluorocarbon insulated aluminum spacer (all series) |
| Frame Width | S9: 109mm | R8Y: 118mm | E6N: 103mm |
| Wall Thickness | S9/R8Y: 1.8mm | E6N: 2.0mm |
| Insulation Strip | S9: 44/24/15mm | R8Y: 35/34/16mm | E6N: 35mm |
| Opening Style | S9/R8Y: outward casement, top-hung, outward top-hung; E6N: inward tilt-and-turn, inward casement |
| Sash/Screen Direction | S9/R8Y: glass outward, screen inward; E6N: both inward |
| Weatherstripping & Seal | EPDM water-swelling; three-seal structure |
| Max Single Fixed Glass | 6 sqm (S9) |
| Sash Range (S9) | Casement: 400–750mm W × 400–1500mm H; Top-hung: 510–750mm W × 700–1500mm H |
| Certifications | CE/NFRC/CSA, US/AU IGCC glass certifications (official website) |
| Reference MOQ | ~2 sqm (platform reference; confirm with supplier) |
| Reference Lead Time | ~25–35 days (platform data; confirm for custom orders) |
Advantages
- Made-to-Size System Window: Unlike stock standard windows, each unit is built to project specifications — width, height, sash layout, glass, and finish are configured per buyer drawings.
- Multi-Series Project Coverage: Three series (S9, R8Y, E6N) address standard residential, coastal safety, and inward-opening project needs — letting buyers source multiple configurations from one 6 foot casement windows supplier.
- Export-Grade Packaging: Four-layer protection — anti-scratch film, pearl cotton, waterproof outer film, and wooden rack — plus PE seawater-proof film and airbag isolation for overseas shipping.
- Certification References: CE, NFRC, CSA, and US/AU IGCC glass certifications are referenced on the official website; buyers should request compliance documents for their specific configuration and target market.
- Flexible Logistics: Door-to-door service or shipping to port is available, supporting both small wholesale orders and larger project deliveries to overseas destinations.
Application Scenarios
- Apartment: Space-conscious apartment layouts benefit from the S9's outward-opening design, which avoids occupying interior floor space during ventilation. The 72-inch width can split into two operable sashes for balanced airflow in living rooms.
- Home Office: Natural light and controlled ventilation support focus and comfort in home workspaces. Low-E or tinted glass options help manage glare on screens, while the three-seal structure reduces outside noise intrusion.
- Hotel: Guest rooms require consistent acoustic performance and climate control. The 35dB sound insulation rating and 2.0W thermal insulation level support occupant comfort, and custom finishes match interior design schemes.
- Office Building: Commercial 6 foot casement windows suit new-build office floors where large glazed areas and fixed-plus-operable configurations deliver daylighting alongside selective natural ventilation for occupied zones.
- Outdoor: For openings exposed to weather, buyers should confirm water tightness (700Pa), wind pressure resistance (5kPa), and surface finish durability for the specific installation orientation and climate exposure.
- Residential Building: Multi-unit residential projects can standardize on one width while varying sash counts, glass types, and colors per unit type — simplifying procurement while accommodating different floor plan requirements.
- Exterior: Exterior-facing installations demand verified weather resistance; confirm that the selected series, glass configuration, and sealing system meet local building code requirements for wind load, water penetration, and energy performance.
- Villa: Villa projects often combine large fixed panels with operable sashes for panoramic views and ventilation. The 6-square-meter maximum single fixed glass area and multi-grid options support architectural customization.
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 the 6-foot dimension refer to — width or height?
The 72-inch (1829mm) dimension refers to width only for 6 foot casement windows. Height is custom and must be specified by the buyer. This is a made-to-size product, not a fixed-height stock window, so provide your required opening dimensions and drawings.
What information is needed for a quote?
Provide quantity, destination port or address, project drawings with opening dimensions, series preference (S9/R8Y/E6N), glass type, color, opening style, screen requirement, and packaging preferences. The more complete your configuration details, the more accurate the quotation.
Is the standard glass tempered?
S9 standard glass is 5+27A+5 fluorocarbon insulated aluminum spacer. A detail page references double tempered glass, but the main specification does not explicitly confirm tempering. Confirm with the supplier whether tempering is standard or optional before ordering.
What is the MOQ and lead time?
Platform references show approximately 2 square meters MOQ and 25–35 days delivery for 6 foot casement windows wholesale orders. These are platform data points, not fixed commitments. Confirm series-specific MOQ and production lead time with the supplier for your custom configuration.
What certifications are available?
CE, NFRC, CSA, and US/AU IGCC glass certifications are referenced on the official website. As a 6 foot casement windows supplier, DERCHI can provide compliance documentation for specific glass configurations and target markets — request before ordering.
Can these windows be used in coastal or hurricane zones?
The R8Y series is designed for coastal and typhoon-prone conditions with anti-fall ropes, anti-theft screens, and equal-pressure drainage. Confirm specific hurricane-zone ratings and local code compliance with the supplier before specifying for coastal projects.
What U-value and SHGC can be achieved?
Thermal insulation is rated at Level 6 (2.0W) for S9 and R8Y. Exact U-value (W/m²·K) and SHGC numbers are not provided in current documentation. Request exact parameters and confirm whether Low-E or argon gas is required to achieve target performance.
