This 36 x 48 casement window is a DERCHI custom-made thermal-break aluminum system window, built to project specifications rather than pulled from stock. The primary E5N Langyue series offers inward-opening and tilt-and-turn operation with a 35 mm PA66 insulation strip, argon-filled double tempered glass, and German WEHAG/Winkhaus concealed hardware. Alternative S9 and R8Y series cover outward-opening and coastal security applications.
- Made-to-size: 36 x 48 in (914 x 1219 mm), approx. 1.11 sqm overall area
- E5N frame: 85 mm width, 2.0 mm wall thickness, 35 mm insulation strip
- Configurable glass, colors, structures, and hardware for residential and commercial projects
Product Details
The E5N Langyue system forms the core of this 36 x 48 casement window, using an 85 mm thermal-break aluminum frame with 2.0 mm wall thickness and a 35 mm PA66 insulation strip. Standard glazing is 5+27A+5 double tempered insulating glass with argon gas fill, black PVDF spacer, and DERCHI brand identity on the spacer. The internal and external pressure glazing bead process — with optional 48/88 edge wrapping — works alongside a triple seal system, glue-injected corner joints sealed with silicone, and concealed drainage to manage water and air infiltration.
Inward opening at 90 degrees allows convenient interior cleaning and controlled ventilation, with an optional 180-degree tilt-and-turn accessory for added airflow control. The flyscreen version pairs an inward-opening glass sash with an inward-opening mesh sash that can carry a keyed handle. Buyers evaluating egress compliance should confirm clear opening dimensions against local code, since the overall area of approximately 1.11 sqm does not automatically equal the net clear opening after frame and hardware obstruction.
Product Features
- Thermal-Break PA66 Strip: The 35 mm extra-wide insulation strip in the frame reduces heat transfer across the aluminum profile, supporting energy performance in residential and commercial projects where thermal continuity matters.
- Triple Seal with Glue-Injected Corners: Corner joints receive glue injection followed by silicone seal, combined with a triple rubber seal system and concealed drainage to manage water and air infiltration at the frame.
- Argon-Filled Double Tempered Glass: Standard 5+27A+5 insulating glass uses argon gas fill and a black PVDF spacer, balancing sound insulation, thermal performance, and safety for everyday residential use.
- German WEHAG/Winkhaus Hardware: The concealed tilt-and-turn mechanism and baseless handle come from an established German hardware partner, supporting smooth inward operation and long-term functional reliability for daily use.
- Four-Layer Export Packaging: Anti-scratch film, pearl cotton, waterproof outer film, and a fully enclosed wooden rack protect each unit during shipping, with PE seawater-proof film and air bag isolation for maritime transport.
- Multi-Series Project Flexibility: Beyond the inward-opening primary series, S9 outward-opening and R8Y coastal security alternatives let buyers match performance, opening direction, and budget to specific project conditions.
Customizable Styles
- Glass: Choose from argon-filled, Low-E, laminated, frosted, tinted, ultra-clear, built-in blind, and PVDF/fluorocarbon spacer options to match privacy, energy, and acoustic project requirements.
- Frame and Structure: Single sash, double sash, fixed-plus-opening, three-segment, top transom, asymmetric, multi-lite, bay, and pitched combinations are available for this casement window configuration.
- Size: While the title size is 36 x 48 in (914 x 1219 mm), custom dimensions are supported with a common MOQ of approximately 2 square meters — confirm specific limits per project.
- Color and Finish: Sand Gray, Dark Coffee, Black Crystal, White, Black Walnut, Fluorocarbon Flash Silver, Indigo Gray, and additional color card options are available across powder coating, fluorocarbon, and wood grain finishes.
- Opening Configuration: The primary series supports inward 90-degree opening with optional 180-degree tilt-and-turn; S9 and R8Y alternatives offer outward opening and top-hung configurations for different spatial and ventilation needs.
Hardware Accessories
- Handle: The standard handle is a German WEHAG/Winkhaus baseless design; optional fingerprint and password handles can be discussed for smart-access project requirements.
- Tilt-and-Turn Mechanism: Concealed tilt-and-turn hardware supports the 90-degree inward opening function, with an optional 180-degree accessory for extended ventilation control.
- Flyscreen Handle: In the flyscreen version, the mesh sash opens inward and can be equipped with a keyed handle for controlled access and security.
- Lock and Hinge (Alternative Series): S9 uses a 13-inch casement friction hinge with custom lock point and seat; R8Y pairs a 12-inch friction hinge with a black zinc alloy four-face six-point lock.
- Sealing and Insulation Hardware: Optional sound and insulation cotton can be added to the frame cavity; EPDM water-swelling rubber strip is featured in the R8Y alternative series for coastal waterproof performance.
Basic Parameters
| Performance Item | Available Information | Buyer Notes |
|---|---|---|
| Thermal Insulation | E5N: 1.8 W level (configuration-dependent) | Confirm exact U-value and glass configuration required to achieve this rating. |
| Wind Pressure Resistance | E5N: approximately 5 kPa | Confirm exact rating, applicable test standard, and regional compliance requirements. |
| Water Tightness | E5N: 550-700 Pa | Values may vary between flyscreen and non-flyscreen versions — confirm per configuration. |
| Air Tightness | E5N: 1.2 | Confirm classification level and applicable testing standard for the target market. |
| Sound Insulation | E5N: 35 dB | Confirm whether this applies to standard 5+27A+5 glass or requires upgraded glazing. |
Product Specifications
| Parameter | E5N (Primary Series) | S9 (Alternative) | R8Y (Alternative) |
|---|---|---|---|
| Product Name | 36 x 48 Casement Window | Same | Same |
| Product Type | Thermal-break aluminum, inward-opening / tilt-and-turn | Thermal-break aluminum, outward-opening / top-hung | Thermal-break aluminum, outward-opening / top-hung |
| Material | Thermal-break aluminum with PA66 insulation strip | Thermal-break aluminum, multi-strip | Thermal-break aluminum, multi-strip |
| Glass Type | 5+27A+5 double tempered insulating, argon, black PVDF spacer | 5+27A+5 fluorocarbon spacer | 5+27A+5 fluorocarbon spacer |
| Frame Width | 85 mm | 109 mm | 118 mm |
| Wall Thickness | 2.0 mm | 1.8 mm | 1.8 mm |
| Insulation Strip | 35 mm | 44/24/15 mm multi-strip | 35/34/16 mm |
| Hardware | WEHAG/Winkhaus baseless handle, concealed tilt-and-turn | Child-safety handle, 13-in friction hinge, custom lock | WEHAG handle, 12-in friction hinge, six-point lock |
| Opening Style | Inward 90°, optional 180° tilt-and-turn | Outward, top-hung, outward top-hung | Outward, top-hung, outward top-hung |
| Size | 36 x 48 in (914 x 1219 mm), approx. 1.11 sqm | Same title size | Same title size |
| Opening Sash Range | Width 508–1000 mm; height 600–2000 mm (manual) or 560–2000 mm (export site) — confirm per order | Confirm per series | Confirm per series |
| Customization | Custom sizes, colors, glass, hardware, structures supported | Same | Same |
| Common MOQ | Approx. 2 sqm (subject to confirmation) | Same | Same |
| Delivery | Approx. 25–35 days (subject to confirmation) | Same | Same |
| Notes | Performance values vary by configuration; confirm certification scope per series and target market | CE/NFRC/CSA/IGCC stated for S9 — confirm applicability to E5N | EPDM water-swelling strip; confirm coastal ratings |
Advantages
- System-Level Thermal Break: The 35 mm PA66 strip and 2.0 mm wall thickness in the primary series frame provide a structured thermal break rather than a generic aluminum profile, supporting energy-conscious residential design.
- Established Hardware Partnership: German WEHAG/Winkhaus concealed tilt-and-turn hardware and baseless handles bring recognized component reliability to the inward-opening configuration for daily operation.
- Multi-Series Project Coverage: E5N, S9, and R8Y series cover inward-opening, outward-opening, and coastal security scenarios, letting one supplier address varied project tiers and budgets.
- Export-Ready Packaging: Four-layer protection with PE seawater-proof film, air bag isolation, and wooden rack packaging supports maritime shipping; door-to-door and port delivery are available.
- Custom Production Capability: As a 36 x 48 casement window manufacturer, DERCHI supports made-to-size production with configurable glass, colors, structures, and hardware for wholesale and project orders.
Application Scenarios
- Apartment: Space-conscious apartment layouts benefit from the inward-opening design, which keeps exterior walkways clear while providing controlled ventilation. The 36 x 48 size fits common residential rough openings without requiring structural modifications.
- Home Office: A home office needs daylight and quiet. The 5+27A+5 argon-filled double tempered glass helps reduce external noise, while the tilt-and-turn function allows gentle airflow during working hours without fully opening the sash.
- Hotel: Hotel guest rooms require repeatable hardware performance and consistent finishes. The WEHAG/Winkhaus concealed mechanism and extensive color card — including Pearl White and Quartz Gray — support design coordination across room types.
- Office Building: Commercial office floors with fixed glazing can use the 36 x 48 casement as an operable ventilation insert within larger fixed-plus-opening combinations. Confirm wind pressure ratings for high-rise installation conditions before ordering.
- Outdoor: For balconies or covered exterior corridors, buyers should confirm water tightness, surface finish durability, and hardware corrosion resistance for the specific exposure conditions. Concealed drainage helps manage rainwater, but outdoor ratings require project-specific verification.
- Residential Building: Multi-unit residential projects can standardize on the primary series for bedrooms and bathrooms, using frosted or privacy glass where needed. The made-to-size approach accommodates varying rough opening dimensions across units.
- Exterior: As an exterior facade element, the window must meet local wind pressure, water tightness, and energy code requirements. Buyers should confirm that performance values and certification documents apply to their target market and installation conditions before specifying.
- Villa: Villa projects often combine operable and fixed glazing for framed views. The configurable structure options — including top transom, asymmetric opening, and bay combinations — let architects integrate the 36 x 48 size into larger compositional window walls.
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-made thermal-break aluminum casement window in 36 x 48 in (914 x 1219 mm), primarily configured as the E5N Langyue inward-opening/tilt-and-turn system with argon-filled double tempered glass and WEHAG/Winkhaus hardware.
Does a 36 x 48 casement window meet egress?
The overall area is approximately 1.11 sqm (about 11.94 sq ft), but egress compliance depends on the clear opening area after frame and hardware obstruction. Buyers must confirm clear opening dimensions against local code requirements for the specific sash configuration.
Can the window be customized?
Yes. Glass options include Low-E, laminated, frosted, tinted, and built-in blind. Colors span multiple finishes. Structures include single sash, double sash, fixed-plus-opening, and multi-lite combinations. Hardware and opening style are also configurable — confirm details with the supplier.
What information is needed for a quote?
Provide quantity, destination port, project drawings, glass configuration, hardware selection, color and finish, opening style, and packaging preference. As a 36 x 48 casement window supplier, DERCHI uses these details to prepare an accurate quotation for wholesale or project orders.
Which certifications apply to the E5N series?
S9 series documentation references CE, NFRC, CSA, and IGCC certifications, but it is unclear whether these extend to the E5N primary series. Buyers should confirm certification scope per series and target market before ordering.
What is the lead time and packaging?
Delivery is referenced at approximately 25-35 days, subject to confirmation for specific order volumes. Packaging includes four-layer protection with anti-scratch film, pearl cotton, waterproof film, wooden rack, PE seawater-proof film, and air bag isolation for export shipping.
What should buyers confirm before ordering?
Confirm opening sash height range (manual states 600-2000 mm; export site states 560-2000 mm), performance values per flyscreen or non-flyscreen configuration, warranty terms, U-value/SHGC for selected glass, and installation document availability before placing an order.
