A casement window for bathroom projects requires a balance of privacy, moisture control, and ventilation. This DERCHI custom thermal-break aluminum window uses the E5N Langyue system with inward-opening and tilt-and-turn functionality to address humid environments.
- Three-seal system with hidden drainage for moisture management
- Privacy glass options including frosted and built-in blind configurations
- Tilt-and-turn hardware for controlled ventilation without full opening
Product Details
The E5N Langyue system profile features an 85mm frame width, 2.0mm wall thickness, and a 35mm PA66 insulation strip. Construction incorporates a three-seal system, internal and external pressure glue strips, hidden drainage, and corner gluing followed by silicone application. The standard glass is 5+27A+5 double tempered insulating glass with argon gas, using a black PVDF spacer with the DERCHI logo and an optional 48/88 edge wrapping configuration.
For projects requiring different opening directions or climate defenses, two alternative series are available. The S6 Xinghai system (82mm frame, 1.8mm wall) offers outward-opening operation with a hidden folding flyscreen. The R8Y Ruixuan system (118mm frame, 1.8mm wall) is built for coastal or typhoon-exposed environments, featuring an EPDM water-swelling glue strip, anti-fall rope, and a custom black zinc alloy four-side six-point lock.
Product Features
Privacy Glass Options: Frosted, tinted, ultra-clear, and built-in blind glass configurations allow tailored visibility control for bathroom and high-rise environments.
Moisture-Resistant Sealing: A three-seal system combined with hidden drainage and corner gluing followed by silicone helps manage humid bathroom conditions.
Tilt Ventilation: The tilt-and-turn mechanism allows controlled airflow for humidity reduction without needing to fully open the sash inward.
Easy-Clean Inward Opening: The inner casement opens at 90 degrees, providing safe and convenient access to exterior glass surfaces for cleaning.
Optional Insulation Upgrades: Sound insulation and thermal cotton additions can be specified to meet specific acoustic and thermal project targets.
Smart Hardware Access: Optional fingerprint and password handles, along with keyed flyscreen handles, add security and child-safety functionality.
Customizable Styles
Glass Configuration: Options include argon gas, Low-E, laminated, frosted, tinted, ultra-clear, built-in blind, and PVDF/fluorocarbon spacers for project-specific needs.
Color and Finish: Over twenty verified colors including Sand Gray, Black Walnut, Caramel Coffee, and Pearl White, with powder coating, fluorocarbon, or wood grain finishes.
Size Range: Opening sash width spans 508-1000mm; height is 600-2000mm per manual or 560-2000mm per export page—confirm applicable range before ordering.
Opening Structure: Configurations include single sash, fixed+opening, three-segment, multi-pane curtain wall, pitched/trapezoidal, and hexagonal/bay window combinations.
Flyscreen Selection: Available with or without flyscreen; flyscreen versions can be equipped with a keyed handle for added child safety and security.
Hardware Accessories
Handle Options: German WEHAG/Winkhaus baseless handle standard; optional fingerprint and password handles available for access control upgrades.
Tilt-and-Turn Hinge: Hidden tilt-and-turn accessories are standard, with optional 180-degree tilt-and-turn accessories available for expanded opening angles.
Flyscreen Handle: The flyscreen version sash can be equipped with a keyed handle, adding a layer of security and child-safety restriction.
R8Y Hardware: The alternative R8Y series uses a 12-inch friction hinge and a custom black zinc alloy four-side six-point lock for coastal defense.
Sealing Hardware: EPDM water-swelling glue strip is confirmed for R8Y; for E5N, buyers should confirm the specific sealing material used.
Basic Parameters
Performance Item | Available Information | Buyer Notes |
|---|---|---|
Thermal Insulation | E5N: 1.8W level; S6/R8Y: 2.0W level 6 | Confirm exact U-value and whether Low-E glass is required for target performance. |
Wind Pressure Resistance | E5N: ~5kPa; S6/R8Y: 5kPa level 9 | Confirm exact level classification and applicable test standard for your region. |
Water Tightness | E5N: 550-700Pa; S6/R8Y: 700Pa level 6 | Values may vary between flyscreen and non-flyscreen versions; confirm configuration. |
Air Tightness | E5N: 1.2; S6/R8Y: 1.2 level 8 | Confirm if E5N carries the same level 8 classification as alternative series. |
Sound Insulation | E5N/S6/R8Y: 35dB (level 4) | Confirm specific glass configuration required to achieve the 35dB rating. |
Product Specifications
Specification | Details |
|---|---|
Product Name | DERCHI Thermal-Break Aluminum Casement Window |
Primary Series | E5N Langyue System (Inward-opening / Tilt-and-turn) |
Frame Material | Thermal-break aluminum, 2.0mm wall thickness (E5N) |
Glass Type | 5+27A+5 double tempered insulating glass with argon gas |
Insulation Strip | PA66, 35mm width (E5N) |
Opening Sash Width | 508-1000mm |
Opening Sash Height | 600-2000mm (manual) / 560-2000mm (export page) - confirm before production |
Maximum Overall Size | Confirm with supplier for fixed+opening combination limits |
Hardware | WEHAG/Winkhaus baseless handle, hidden tilt-and-turn hinge |
Opening Style | Inward opening, double internal opening, tilt and turn |
Color/Finish | 20+ colors available; powder coating, fluorocarbon, wood grain finishes |
Customization | Custom sizes, colors, glass, and structural combinations supported |
Packaging | Four-layer protection: anti-scratch film, pearl cotton, waterproof film, wooden frame |
Delivery Options | Door-to-door service or port delivery available |
Notes | Common MOQ is 2 sqm; delivery approximately 25-35 days (subject to confirmation) |
Advantages
Bathroom-Specific Design: Privacy glass options, tilt ventilation for moisture control, and a three-seal system address humid bathroom environments directly.
German Hardware Partnership: WEHAG/Winkhaus baseless handles and hidden tilt-and-turn accessories provide smooth operation and structural reliability.
Thermal Break Construction: A 35mm extra-wide PA66 insulation strip supports a 1.8W thermal insulation level for the primary E5N series profile.
Multi-Series Project Fit: E5N handles standard inward applications, S6 offers outward space-saving, and R8Y defends coastal or typhoon-exposed sites.
Export-Ready Packaging: Four-layer protection including anti-scratch film, pearl cotton, waterproof outer film, and a fully enclosed wooden frame supports international shipping.
Application Scenarios
Apartment: Compact bathroom rough openings benefit from the verified 508mm minimum sash width, allowing controlled tilt ventilation without sacrificing interior space.
Home Office: Auxiliary bathrooms in home workspaces can utilize frosted or built-in blind glass to maintain privacy while admitting natural light.
Hotel: A commercial casement window for bathroom projects in hospitality requires consistent finishes and hardware; multiple color and handle options support uniform multi-unit specification.
Office Building: High-rise facilities can leverage inward-opening 90-degree operation for safe exterior glass cleaning and controlled airflow in shared restrooms.
Outdoor: For exterior applications, buyers should confirm water tightness, wind pressure resistance, and surface finish durability against local weather exposure conditions.
Residential Building: New construction can specify the S6 outward-opening series to keep interior sash areas clear while providing hidden folding flyscreen functionality.
Exterior: Coastal or typhoon-exposed facades may require the R8Y series; confirm EPDM sealing, anti-fall rope, and protection corner installation before ordering.
Villa: Custom layouts including bay window, hexagonal, or pitched combinations allow architectural integration for private residential bathroom designs.
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 this product?
It is a DERCHI custom thermal-break aluminum casement window for bathroom applications, primarily using the E5N Langyue system with inward-opening and tilt-and-turn functionality, privacy glass options, and moisture-resistant sealing.
Where can it be used?
It is suitable for apartments, hotels, villas, and high-rise office buildings. Bathroom, bedroom, and exterior scenarios are supported, with alternative series available for coastal or typhoon-exposed installations.
Can it be customized?
Yes. Buyers can specify glass type, color, surface treatment, opening structure, and hardware. Options include frosted glass, built-in blinds, over twenty colors, and configurations like fixed+opening or bay window combinations.
What information is needed for a quote?
Provide quantity, destination port or door-to-door address, drawings or rough opening dimensions, glass configuration, color/finish, hardware preferences, and packaging requirements for an accurate quotation.
Can it be used for B2B projects?
Yes. The product supports multi-unit commercial sourcing with consistent finishes. Common MOQ is 2 square meters, and multiple series are available for different performance and price tiers.
Are technical documents available?
Specific certification listings like CE, AAMA, or NFRC are not confirmed in standard documentation. Buyers should request applicable test reports and compliance documents for their target market during quotation.
What should buyers confirm before ordering?
Confirm the opening sash height range (600-2000mm vs 560-2000mm), whether EPDM is used in E5N, maximum overall window size, warranty terms, and installation documentation before finalizing your order.
