This aluminium casement window features a glass-hidden frame design and meets NFRC, AS2047, and CE standards. It is specified for commercial, residential, and exterior applications.
- Manufactured in a 70,000+ m² facility with 600+ employees and 600,000+ m² annual output
- 100+ national patents and a 20+ expert R&D team
- 700+ distributors serve customers in more than 100 countries
- 100% full inspection before shipment with one-stop service from ordering to delivery
Product Details
The WY-118L aluminum casement window is built with a 1.8MM-thick, 118MM-wide aluminum profile integrating a DERCHI S18 multi-cavity insulation strip, with double tempered glass (5mm+27A+5mm) filled with argon gas and separated by a PVDF aluminum strip. The sash operates through outward or awning opening via a DERCHI-developed 13-inch flat open friction hinge, with locking handled by a WEHAGE six-point lock seat system and a patented Black Six Point Lock. Production follows seven stages from surface treatment through profile cutting, glass cutting and strip installation, opening panel installation, frame and casing assembly, troubleshooting and sealing, to final packing, within a 70,000+ m² facility staffed by 600+ employees.
Procurement teams should confirm shop drawing, frame color, glass type and thickness, and glass color before requesting a quotation, as pricing is calculated from these buyer-specified parameters. The WY-118L series offers ten customizable layout configurations combining fixed panels, casement sashes, and awning openings, alongside seven glass configurations and twelve color finish options including two PVDF finishes, so teams should match these selections to project energy and aesthetic targets before finalizing specifications.
Product Features
- 118MM frame width with 1.8MM profile thickness on the WY-118L — determines structural load capacity and visible frame proportion in the wall opening.
- Outward opening / awning operation — informs placement where inward swing would conflict with interior fixtures or furniture.
- Double tempered glass with argon gas (5mm+27A+5mm) — selects for projects requiring safety glazing combined with reduced conductive heat transfer.
- DERCHI S18 multi-cavity insulation strip — determines thermal break level for energy-code compliance in heated or cooled buildings.
- U-factor of 0.23 and SHGC of 0.20 — selects for projects with strict solar heat gain and thermal transmittance limits.
- WEHAG no-base handle in black, silver, or antique bronze — informs hardware finish coordination with adjacent door and window trim.
- Six-point locking mechanism with invention patent — selects for security-sensitive installations requiring multi-point engagement.
- 13-inch flat open friction hinge independently developed by DERCHI — determines sash stability during outward operation.
- PVDF color finish coatings — informs color retention requirements for exterior-exposed or UV-intensive installations.
- Sound insulation of 35 dB, water tightness of 700Pa, and wind pressure resistance of 5K Pa — determines suitability for acoustic separation, exposed facades, or high-rise locations.
Customizable Styles
- Seven glass configurations are available: single, tempered, double-glazed, triple, insulating, laminated, and frosted.
- Color finishes include two PVDF options (Retro Green, Mint Gold) and ten stock color options ranging from wood-grain textures to solid metallic and matte finishes.
- The WEHAG handle is available in Black and Silver.
- Opening way is configurable as outward opening or awning.
- Optional packaging is available as New 48 Pack or New 88 Pack.
- Price is based on the buyer's specific requirement, including shop drawing, frame color, glass type and thickness, and glass color.
Hardware Accessories
- WEHAG handle in black and silver finishes; standard no-base variant also available in black, silver, and antique bronze.
- WEHAG hinge paired with a 13-inch flat open friction hinge independently developed by DERCHI for stable outward sash operation.
- Black Six Point Lock with invention patent, integrated with the WEHAGE lock point and lock seat system for six-point locking.
- DERCHI customized transmission box and independently developed handle designs available for the WY-118L series.
- 10-year quality warranty covers hardware and accessories working properly under correct operation.
- Confirm handle finish, transmission box configuration, and lock system compatibility for each project.
Basic Parameters
| Performance Dimension | Product Value | Meaning & Test Method | Evidence to Request |
|---|---|---|---|
| Thermal Insulation | U-factor 0.23; SHGC 0.20; Standard DERCHI insulation strip | Measures heat transfer through the window assembly; compare using the declared rating, test method, specimen configuration, and project boundary conditions. | Request the applicable thermal test or simulation report and the declared product configuration. |
| Wind Pressure Resistance | 5 kPa | Measures structural performance under wind load; review against the specified test pressure, specimen size, anchorage, and acceptance criteria. | Request the wind-pressure test report and confirm the tested specimen and installation conditions. |
| Water Tightness | 700 Pa | Measures resistance to water penetration under spray exposure; review against the test pressure, spray exposure, specimen configuration, and leakage criteria. | Request the water-penetration test report and confirm the tested pressure and assembly configuration. |
| Air Tightness | 1.2 m³/(m·h) | Measures air leakage rate; review against the pressure differential, specimen area, reporting units, and tested configuration. | Request the air-leakage test report and confirm its pressure and specimen configuration. |
| Sound Insulation | 35 dB | Measures acoustic insulation; compare using the stated laboratory method, specimen construction, glazing, and reported acoustic metric. | Request the acoustic test report and confirm that the tested construction matches the proposed configuration. |
Product Specifications
| Specification | Value |
|---|---|
| Glass | Double Tempered Glass with argon gas 5mm+27A+5mm (PVDF Aluminum Strip between double glass) |
| Profile Thickness | 1.8 mm |
| Frame Width | 118 mm |
| Handle | WEHAG Handle (Black and Silver) |
| Hinge | WEHAG Hinge |
| Lock Point | Black Six Point Lock (Invention patent) |
| Insulation Strip | DERCHI insulation strip (S18 multi-cavity) |
| Opening Way | Outward Opening / Awning |
| Optional Package | New 48 Pack / New 88 Pack |
| Water Tightness | 700 Pa |
| Air Tightness | 1.2 m³/(m·h) |
| Wind Pressure Resistance | 5 kPa |
| Sound Insulation | 35 dB |
| U-factor | 0.23 (with double tempered glass + argon) |
| SHGC | 0.20 (with double tempered glass + argon) |
| Warranty | 10 years quality warranty |
| Delivery Time | 25–35 days after deposit and drawing confirmed |
- Shop drawing
- Frame color
- Glass type
- Glass thickness
- Glass color
Advantages
- 15+ years of aluminum window and door manufacturing across a 70,000+ m² factory with 4,000 m² showroom and 600+ employees.
- 600,000+ m² annual output with 200,000+ completed project cases.
- Integrated window system supply from components through to finished products ready for installation.
- 100% full inspection before shipment as standard outgoing quality control.
- Authorization under NFRC, CE, AS2047, CSA, and ISO9001 standards.
- 100+ national patents including invention patents and 50+ industry honors.
- 20+ expert R&D team for product development and customization.
- OEM/ODM customization capability accepts buyer drawings and specifications for project-specific production.
- The supplier's own customization options and global distributor network are the basis on which OEM/ODM capability is offered.
- One-stop customer service from ordering through shipment, with engineering and supervising service available for installation.
- 25-35 day delivery after deposit and drawing confirmation.
- 10-year quality warranty on finished products.
Application Scenarios
| Scenario | Fit Basis | Confirm Before Specification |
|---|---|---|
| Commercial buildings in coastal or high-precipitation regions | Listed as an application scenario for this product | Confirm weather-seal class and corrosion protection for the specific coastal exposure |
| High-rise commercial structures | Listed as an application scenario for this product | Confirm wind load conditions for the building height and local building code |
| Buildings located near traffic corridors | Listed as an application scenario for this product | Confirm acoustic requirements and glazing configuration for the traffic noise level |
| Commercial facility management with energy efficiency requirements | Listed as an application scenario for this product | Confirm energy standard and glazing configuration for the project |
| Residential buildings | Listed as an application scenario for this product | Confirm opening configuration, ventilation needs, and frame finish for residential interiors |
| Apartments | Listed as an application scenario for this product | Confirm opening configuration and ventilation needs for apartment units |
| Home offices | Listed as an application scenario for this product | Confirm opening type and daylight access for home office spaces |
| Villa projects | Listed as an application scenario for this product | Confirm design style, frame visibility, and color finish matching the architectural plan |
| Hotels | Listed as an application scenario for this product | Confirm acoustic, thermal, and climate control conditions for guest comfort |
| Office buildings | Listed as an application scenario for this product | Confirm daylight and thermal conditions for occupied workspaces |
| Exterior applications | Listed as an application scenario for this product | Confirm exposure class, installation method, and structural anchoring for the wall system |
FAQ
What must be confirmed technically before ordering?
Drawings must be confirmed and deposit received before the 25-35 day delivery period begins. Price is calculated based on buyer-specific requirements including drawings, frame color, glass type, glass thickness, and glass color.
What should buyers prepare for volume procurement?
The window system is supplied as a complete package including profile, hardware, accessories, and glass, delivered as finished products ready for installation.
What standards do the products meet?
Products meet NFRC, AS2047, and CE standards, with additional testing available on request.
What warranty coverage applies to the window system?
A 10-year quality warranty applies to the window system.
What quality inspection is performed before shipment?
100% full inspection is conducted on all products before shipment.
