The 38 x 38 casement window is a DERCHI custom thermal-break aluminum product organized around a 965 x 965 mm square proportion. Built on the E5N Langyue system, it supports inward-opening and tilt-and-turn modes for bedrooms, bathrooms, stairwells, and small facades.
- Dimension: 38 x 38 in (965 x 965 mm), total area ~0.93 sqm
- Primary series: E5N with 85 mm frame, 2.0 mm wall, 35 mm thermal break strip
- Glass: 5+27A+5 double-tempered insulated glass with argon and PVDF spacer
- Hardware: German WEHAG/Winkhaus concealed tilt-and-turn hardware
Product Details
The E5N Langyue system structures this window with an 85 mm frame width, 2.0 mm wall thickness, and a 35 mm PA66 thermal break strip. The standard 5+27A+5 double-tempered insulated glass uses a black PVDF/fluorocarbon aluminum spacer carrying the DERCHI logo. At 965 mm width, the window falls within the opening sash engineering range of 508-1000 mm, though buyers should confirm whether a single-sash or double-sash configuration (yielding ~483 mm per sash) best suits their structural needs.
Differentiation comes from the internal/external pressure glazing strip process compatible with 48/88 edge wrapping, injected glue corner joints with silicone application, and a triple seal system with concealed drainage. The inward 90-degree opening angle allows convenient interior maintenance, while the tilt-and-turn mode provides controlled, child-safe ventilation. The flush frame-sash alignment delivers clean modern proportions for compact residential and light commercial openings.
Product Features
- 35 mm Thermal Break Strip: The extra-wide PA66 strip reduces heat transfer between interior and exterior aluminum profiles, supporting energy efficiency in residential and commercial projects.
- Triple Seal System: Multiple EPDM rubber sealing layers work with concealed drainage to manage water infiltration and air leakage during adverse weather conditions.
- Tilt-and-Turn Hardware: German WEHAG/Winkhaus concealed hardware enables 90-degree inward opening for cleaning and a tilt mode for secure, draft-free ventilation.
- Pressure Glazing Process: Internal and external pressure glazing strips secure the insulated glass unit, compatible with 48/88 edge wrapping for stable long-term glass retention.
- Flush Frame-Sash Design: Clean square proportions and aligned frame-sash surfaces provide a modern aesthetic suitable for compact openings in bedrooms and stairwells.
- Configuration Flexibility: Buyers can select single-sash, double-sash, or fixed-plus-opening combinations, with options for flyscreen integration and privacy glass.
Customizable Styles
- Glass Options: Choose from argon gas, Low-E, laminated, frosted, tinted, ultra-clear, or built-in blind glass to match privacy and performance needs.
- Frame and Size: Custom dimensions are supported around the 38 x 38 in format; buyers should provide project drawings to confirm exact opening sizes.
- Colors and Finishes: Select from Sand Gray, Dark Coffee, Black Walnut, Fluorocarbon Flash Silver, Indigo Gray, and other powder coating or wood grain finishes.
- Opening Configurations: Options include single-sash, double internal opening, fixed-plus-opening, top transom, and asymmetric layouts for project-specific ventilation.
- Project Customization: As a custom 38 x 38 casement window supplier, DERCHI accommodates structural variations with a common MOQ of 2 square meters.
Hardware Accessories
- Handle: German WEHAG/Winkhaus baseless handle provides inward and tilt-and-turn operation control with a clean aesthetic profile.
- Tilt-and-Turn Hinge: WEHAG hidden tilt-and-turn hinge mechanism supports 90-degree inward opening and secure tilt-mode ventilation positioning.
- Lock Options: Optional fingerprint handle, password handle, and keyed flyscreen sash handle are available for child-safe and security-focused scenarios.
- Sealing Hardware: The system integrates injected glue corner joints with silicone application and triple EPDM seals for weather resistance.
- Accessories: Optional 180-degree tilt-and-turn accessory and sound/thermal insulation cotton can be discussed for project-specific upgrades.
Basic Parameters
| Performance Item | Available Information | Buyer Notes |
|---|---|---|
| Thermal Insulation | 1.8 W level (E5N system reference) | Buyer should confirm exact U-value and whether Low-E glass is included. |
| Wind Pressure Resistance | Approximately 5 kPa | Buyer should confirm exact rating and applicable test standard. |
| Water Tightness | 550-700 Pa | Confirm exact value for with-flyscreen vs without-flyscreen configuration. |
| Air Tightness | 1.2 | Buyer should confirm classification level and corresponding test standard. |
| Sound Insulation | 35 dB | Buyer should confirm test conditions and specific glass configuration used. |
Product Specifications
| Specification | Details |
|---|---|
| Product Name | 38 x 38 Casement Window |
| Product Type | Thermal-break aluminum inward-opening / tilt-and-turn casement window |
| Material | Thermal-break aluminum (E5N Langyue system) |
| Glass Type | 5+27A+5 double-tempered insulated glass |
| Glass Thickness | Standard 5mm + 27A + 5mm; other thicknesses subject to confirmation |
| Frame Option | 85 mm frame width, 2.0 mm wall thickness, 35 mm thermal break strip |
| Hardware | German WEHAG/Winkhaus baseless handle, concealed tilt-and-turn hardware |
| Opening Style | Inward opening (90°), tilt-and-turn; optional 180° accessory |
| Size Range | 38 x 38 in (965 x 965 mm); opening sash width 508-1000 mm, height 560-2000 mm (confirm exact range) |
| Application | Bedrooms, bathrooms, stairwells, studies, small facades |
| Customization | Custom sizes, colors, glass types, and structural configurations available |
| Notes | Common MOQ 2 sqm; reference delivery ~25-35 days (confirm for specific order) |
Advantages
- Systematic Thermal Break: The 35 mm extra-wide PA66 thermal break strip limits heat transfer, supporting energy efficiency in residential and commercial projects.
- German Hardware Partnership: Integration of WEHAG/Winkhaus concealed tilt-and-turn hardware provides reliable operation for inward-opening configurations.
- Multi-Series Coverage: Buyers can select E5N for inward tilt-turn, S9 for outward modern facades, or R8Y for coastal safety scenarios.
- Customization Depth: Extensive options across glass type, color finish, structural layout, and hardware accessories accommodate specific project requirements.
- Export Packaging: Four-layer protective packaging with anti-scratch film, pearl cotton, waterproof film, and wooden rack supports safe maritime shipping.
Application Scenarios
- Apartment: The 38 x 38 casement window fits compact apartment openings where inward opening avoids exterior obstruction and tilt-and-turn mode provides secure background ventilation.
- Home Office: Clean square proportions and natural light transmission support focused work environments, with sound insulation cotton available as an optional upgrade.
- Hotel: Bathroom and guest room applications benefit from frosted privacy glass options and keyed flyscreen handles for controlled airflow and guest security.
- Office Building: Commercial 38 x 38 casement window configurations can be combined in multi-lite curtain wall formats for modern office facades and stairwell ventilation.
- Outdoor: For outdoor or exposed installations, buyers should verify water tightness, wind pressure resistance, and surface finish durability against local weather conditions.
- Residential Building: High-rise residential buildings benefit from interior maintenance access via 90-degree inward opening and child-safe tilt-mode ventilation hardware.
- Exterior: When used on exterior small facades, confirm that the selected fluorocarbon or powder coating finish meets local UV and weather resistance requirements.
- Villa: The square proportion and wood grain finishes like Black Walnut or Pear Wood complement villa interiors, offering both aesthetic alignment and functional ventilation.
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 information is needed to get a quote for a custom 38 x 38 casement window?
Buyers should provide project quantity, destination port, opening drawings, desired glass type, color finish, hardware preferences, and packaging requirements. This allows the supplier to calculate accurate pricing and lead times.
Can the 38 x 38 in (965mm) width be configured as a single-sash window?
The 965 mm width falls within the E5N opening sash engineering range of 508-1000 mm. However, buyers should confirm single-sash structural feasibility versus a double-sash configuration with the supplier before production.
Are CE, NFRC, or CSA certifications available for the E5N series?
CE, NFRC, CSA, and IGCC certifications are explicitly mentioned for the S9 series. Buyers should request current certification documents to verify whether they apply to the E5N series and their target market.
Which opening sash height range applies to my order?
The E5N manual states an opening sash height range of 600-2000 mm, while the export page lists 560-2000 mm. Buyers should confirm which engineering range applies to their specific configuration before finalizing drawings.
Do performance values differ between with-flyscreen and without-flyscreen versions?
Yes, water tightness, air tightness, and thermal insulation values may vary between configurations. Buyers should request the exact performance parameters and certified test reports for their selected glass and flyscreen setup.
What is the delivery time and warranty for this window?
Platform data shows a reference delivery of 25-35 days, but this is not specific to E5N. Warranty terms are currently undocumented. Buyers must confirm exact lead times and warranty duration with the supplier.
Are installation hardware and grilles available for this product?
Specific installation methods, jamb options, and mounting hardware details should be requested directly. Buyers should also confirm availability of grilles, grids, or divided-lite patterns, as these are not documented in current facts.
