The 36 x 36 double casement window is a custom-made thermal-break aluminum window built on DERCHI's S9 Starlight System. Each unit is produced to order — not pulled from stock — giving project buyers control over glass, color, hardware, and opening configuration for their specific building requirements.
- Double-sash layout: each sash approximately 457 mm wide, with a three-lite option at 305 mm per lite
- S9 profile: 109 mm frame, 1.8 mm wall thickness, 44/24/15 mm insulation strip configuration
- Standard glass: 5+27A+5 fluorocarbon insulated aluminum spacer with double tempered panes
- Opening: outward casement, top-hung, or outward-opening top-hung; glass sash opens outward, screen sash inward
Product Details
The S9 Starlight System forms the primary structure for this custom 36 x 36 double casement window. The 109 mm frame uses a 1.8 mm multi-cavity aluminum profile with a 44 mm extra-wide insulation strip, paired with a three-seal EPDM water-swelling weatherstrip system. Frame and sash sit on the same horizontal line, and a micro-elastic glass block stabilizes the 5+27A+5 double tempered glass within the fluorocarbon insulated aluminum spacer. The double-sash configuration splits the 914 mm opening into two roughly 457 mm sashes; a three-lite alternative divides it into 305 mm sections. Glass sashes open outward while screen sashes open inward, with casement, top-hung, and outward-opening top-hung options available.
Two alternative series give buyers tiered choices. The R8Y uses a 118 mm frame with 35/34/16 mm insulation strips, a WEHAG handleless-base handle, 12-inch friction hinge, and a four-face six-point lock — positioned toward security and coastal conditions, though coastal suitability should be verified against regional test data. The E0 carries a 100 mm frame with 35/30/12 mm strips and is positioned as a soundproof double-glazing option with 48/88 edge wrapping and curved top process. All three series share identical performance parameters.
Product Features
- Thermal Insulation: The 44 mm extra-wide insulation strip within the 1.8 mm multi-cavity profile delivers Class 6 thermal performance at 2.0W, reducing heat transfer for energy-conscious building projects.
- Water Tightness: EPDM water-swelling weatherstrip combined with a three-seal structure achieves 700Pa water resistance (Class 6), helping manage wind-driven rain in exposed wall installations.
- Sound Insulation: Standard 5+27A+5 double tempered glass with a fluorocarbon insulated aluminum spacer provides 35dB sound reduction (Class 4) for rooms facing traffic or urban noise.
- Security Hardware: Anti-pry strike plates, a two-point lock, roller-sleeve lock points, and a custom child-safe handle work together to resist forced entry and protect occupants.
- Wind Pressure Resistance: The multi-cavity aluminum profile reaches 5kPa wind pressure resistance (Class 9), though buyers in hurricane zones should confirm adequacy against local building codes.
- Air Tightness: Three-seal construction with EPDM weatherstrip achieves an air tightness rating of 1.2 (Class 8), limiting drafts and uncontrolled air infiltration through the window assembly.
Customizable Styles
- Glass Options: Beyond standard 5+27A+5, buyers can select argon gas, Low-E, laminated, frosted, tinted, ultra-clear, or blind glass — confirm performance documents for each upgrade.
- Frame Series: S9 (109 mm), R8Y (118 mm), and E0 (100 mm) frames offer different insulation strip configurations and hardware packages for varying budget and performance tiers.
- Size and Layout: The 36 x 36 in reference size can be adjusted; casement sash range is W400–750 mm × H400–1500 mm, and maximum single fixed glass area reaches 6 sqm.
- Color and Finish: Verified S9 colors include Sand Gray, Dark Coffee, Black Crystal, Starry Black, White, Black Walnut, and Pear Wood with powder coating, fluorocarbon, or wood grain finishes.
- Opening and Structure: Choose from outward casement, top-hung, or 12-plus structural combinations including fixed+operable, three-segment, top transom, asymmetric, and multi-lite wall layouts.
Hardware Accessories
- Handle: S9 uses a custom child-safe handle; smart options include fingerprint, password, and key handles. R8Y offers a WEHAG handleless-base handle for a cleaner interior look.
- Friction Hinge: The S9 pairs with a 13-inch friction hinge, while the R8Y uses a 12-inch variant — both hold the sash at adjustable opening angles without external stays.
- Lock System: S9 includes a two-point lock with roller-sleeve lock points and anti-pry strike plates. R8Y upgrades to a custom black zinc alloy four-face six-point lock.
- Transmission Hardware: An anti-pull oblique transmission box connects the handle to lock points, with custom lock points and strike plates configured to the selected sash layout.
- Sealing and Screen: EPDM water-swelling weatherstrip forms the three-seal boundary. Screen options include 48-mesh high-transparency mesh, steel wire mesh, guardrail, and integrated blinds.
Basic Parameters
| Performance Item | Available Information | Buyer Notes |
|---|---|---|
| Thermal Insulation | 2.0W (Class 6) with standard 5+27A+5 glass | Confirm U-value when upgrading to Low-E, argon, or laminated glass configurations. |
| Wind Pressure Resistance | 5kPa (Class 9) | Buyers in hurricane or high-wind zones should verify adequacy against local building codes. |
| Water Tightness | 700Pa (Class 6) | Confirm this rating applies to the specific size, configuration, and installation method selected. |
| Air Tightness | 1.2 (Class 8) | Request valid test reports covering the exact product configuration for project approval. |
| Sound Insulation | 35dB (Class 4) with standard double tempered glass | Confirm whether upgraded glass packages improve acoustic performance for noise-sensitive sites. |
Product Specifications
| Specification | S9 Starlight System | R8Y Series | E0 Series |
|---|---|---|---|
| Product Type | Thermal-break outward casement window | Thermal-break outward casement window | Soundproof double-glazing casement window |
| Frame Width | 109 mm | 118 mm | 100 mm |
| Wall Thickness | 1.8 mm | 1.8 mm | 1.8 mm |
| Insulation Strip | 44/24/15 mm | 35/34/16 mm | Frame 35 / Sub-frame 30 / Sash 12 mm |
| Standard Glass | 5+27A+5 fluorocarbon insulated aluminum spacer, double tempered | ||
| Friction Hinge | 13-inch | 12-inch | Confirm with supplier |
| Handle | Custom child-safe handle | WEHAG handleless-base handle | Confirm with supplier |
| Lock | Two-point lock, anti-pry strike plates | Four-face six-point lock | Confirm with supplier |
| Casement Sash Range | Width 400–750 mm, Height 400–1500 mm | ||
| Top-Hung Sash Range | Width 510–750 mm, Height 700–1500 mm | ||
| Max Fixed Glass Area | 6 sqm | ||
| Performance (All Series) | Water 700Pa Class 6 / Air 1.2 Class 8 / Sound 35dB Class 4 / Thermal 2.0W Class 6 / Wind 5kPa Class 9 | ||
| Certifications | CE / NFRC / CSA, US/AU IGCC glass certification — request valid documents for specific configuration | ||
| Customization | Custom sizes, colors, glass, hardware, and structural combinations available | ||
| Notes | R8Y coastal/typhoon positioning requires verification against regional test data; E5N color card not confirmed for S9 | ||
Advantages
- Thermal-Break Multi-Cavity Profile: The 1.8 mm multi-cavity aluminum profile with a 44 mm insulation strip limits thermal bridging, supporting energy-efficient wall assemblies in residential and commercial builds.
- Three-Seal Weatherstrip System: EPDM water-swelling weatherstrip arranged in a three-seal configuration manages water and air infiltration simultaneously across the sash-to-frame junction.
- Verified Class 6–9 Performance: All three series share water tightness 700Pa, air tightness 1.2, sound insulation 35dB, thermal insulation 2.0W, and wind resistance 5kPa ratings.
- Security Hardware Suite: Anti-pry strike plates, two-point or six-point locks, child-safe handles, and optional security screens address intrusion and child-safety concerns in one package.
- Project-Ready Customization: As a 36 x 36 double casement window manufacturer, DERCHI supports custom glass, color, structure, screen, and smart hardware across three series for batch engineering projects.
Application Scenarios
- Apartment: In multi-unit residential towers, the 914 mm opening fits typical bedroom and living-room walls. The outward-opening sash saves interior floor space, while the three-seal structure helps meet air and water tightness targets for building code compliance.
- Home Office: For converted residential workspaces, 35dB sound insulation reduces street and neighborhood noise. The child-safe handle and optional security screen add protection when the room is occupied throughout the day.
- Hotel: Guest rooms benefit from the S9's clean frame-to-sash alignment and fluorocarbon finish options. Project buyers can specify tinted or Low-E glass to manage solar heat gain without sacrificing the outward view.
- Office Building: Commercial facades with repetitive window modules can use the 36 x 36 format as a standard operable unit. The 5kPa wind resistance rating suits mid-rise installations, though local code verification is recommended.
- Outdoor: Exposed or partially sheltered installations should account for wind-driven rain and UV exposure. Buyers should confirm water tightness, surface finish durability, and sealing performance for the specific mounting condition before ordering.
- Residential Building: Batch housing developments can select between S9, R8Y, and E0 series to match budget tiers while keeping consistent performance parameters across all units in the project.
- Exterior: Exterior wall applications require verified wind pressure, water tightness, and thermal performance. Confirm that the selected glass package, frame color, and installation method meet the project's envelope specification and climate zone.
- Villa: Custom villas often need non-standard layouts — the 12-plus structural combinations, including top transom, asymmetric, and bay window formats, let architects match the window to unique wall geometries and interior design themes.
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 custom-made?
Every 36 x 36 double casement window is custom-organized to your specifications — not pulled from stock. Glass type, color, hardware, and structural layout are configured per order, so production begins after drawing confirmation.
What is the price range?
Internal reference ranges suggest approximately 79–109 USD per square meter for standard casement configurations and 99–129 USD for high-impact or thermal-break variants. Actual transaction price depends on configuration, quantity, and destination — request a formal quotation.
What is the minimum order quantity?
Platform pages list a common MOQ of 2 square meters, but this is not a fixed commercial term. For batch engineering or wholesale orders, confirm MOQ, pricing tiers, and production scheduling with the supplier before committing.
What information is needed for a quotation?
Provide quantity, destination port or address, opening size drawings, glass type, color and finish, hardware selection, screen requirements, and packaging preferences. The more complete these details, the more accurate the quote and lead time estimate.
What certifications are available?
CE, NFRC, CSA, and US/AU IGCC glass certifications are listed. Buyers should request valid certificate documents and confirm they cover the specific product configuration and target market before placing an order.
What is the U-value with Low-E and argon glass?
Standard thermal insulation is 2.0W (Class 6) with 5+27A+5 glass. The exact U-value with Low-E, argon, or laminated upgrades is not confirmed in current documentation — verify with the supplier for project-specific energy compliance.
What delivery options and timeline apply?
Door-to-door service and shipping to port are both available, with approximately 25–35 days delivery for standard orders. Bulk project orders may require separate lead-time confirmation depending on quantity and production capacity.
