Aluminium windows designs from DERCHI include the aluminum casement window, a window system for project buyers and distributors evaluating aluminium joinery. DERCHI trades with customers in more than 100 countries through 700+ distributors, and the product line is authorized by NFRC, CE, AS2047, CSA, and ISO9001.
- 600,000+ ㎡ annual output backed by a 70,000+ ㎡ factory with 600+ employees
- 200,000+ successful cases delivered across global projects
- 100% full inspection before shipment with one-stop customer service from ordering to shipment
- Engineering and supervising service available to guide installation
Product Details
The aluminium casement window is constructed with an aluminium frame at 1.8mm profile thickness and 118mm frame width, operating through outward opening or awning action. The glazing unit uses double tempered glass with argon gas fill in a 5mm+27A+5mm configuration separated by a PVDF aluminium strip. Hardware consists of a WEHAG handle available in black and silver, a WEHAG hinge, and a black six-point lock with an invention patent; DERCHI independently developed the customized handle designs, 13-inch flat open friction hinge, and transmission boxes for the WY-118L series, with the WEHAG lock point and lock seat system integrated into the six-point locking mechanism.
Procurement teams should confirm the glass configuration since the double tempered argon unit determines thermal performance, and confirm whether the New 48 Pack or New 88 Pack optional package suits the project before specification. Delivery runs 25-35 days after deposit and drawing confirmation, with 100% full inspection performed before shipment and a 10-year warranty covering frame unfading or peel-off and properly functioning hardware under correct operation. The product carries NFRC, CE, AS2047, CSA, and ISO9001 authorizations, and DERCHI manufactures from a 70,000+ ㎡ facility with 600,000+ ㎡ annual output.
Product Features
- WY-118L aluminum casement window with outward opening/awning configuration — choose this opening type when the project needs ventilation without inward swing clearance.
- 1.8 mm profile thickness and 118 mm frame width — select this frame dimension for structural compatibility with openings that accommodate a 118 mm installation depth.
- WEHAG no-base handle available in black, silver, and antique bronze finishes — match the hardware finish to the interior or exterior color scheme.
- Six-point lock with an invention patent paired with WEHAG hinge and lock-seat system — specify this locking configuration for elevated security requirements.
- Standard DERCHI insulation strip combined with argon-gas-filled tempered glass achieving a U-factor of 0.23 and SHGC of 0.20 — select this glazing package for projects targeting low heat transfer and low solar heat gain.
- Water tightness 700Pa, air tightness 1.2 m³/(m·h), wind pressure resistance 5K Pa, and sound insulation 35 dB — use these ratings to confirm suitability for exposed facades and noise-sensitive locations.
Customizable Styles
- Orderable glass option: Double Tempered Glass with argon gas (5mm+27A+5mm) with a PVDF Aluminum Strip between double glass.
- Orderable opening way options: Outward Opening or Awning.
- Orderable handle options: WEHAG Handle in Black or Silver.
- Orderable hinge: WEHAG Hinge.
- Orderable lock point: Black Six Point Lock (Invention patent).
- Orderable insulation strip: Standard DERCHI insulation strip.
- Orderable profile dimensions: 1.8MM thickness, 118MM frame width.
- Orderable optional packages: New 48 Pack or New 88 Pack.
- Glass configuration is a project input that determines thermal performance: the double tempered argon-filled unit yields U-factor 0.23 and SHGC 0.20.
- Opening way is a project input with options of Outward Opening or Awning.
- Optional package is a project input with options of New 48 Pack or New 88 Pack.
Hardware Accessories
- Handle: WEHAG Handle available in Black and Silver, with a WEHAG standard no-base handle option in black, silver, and antique bronze finishes.
- Hinge: WEHAG Hinge paired with a DERCHI-developed 13-inch flat open friction hinge for the WY-118L series.
- Lock: Black Six Point Lock with an invention patent, integrated with the WEHAGE lock point and lock seat system for the six-point locking mechanism.
- Transmission: DERCHI independently developed transmission boxes for the WY-118L series.
- Insulation strip: Standard DERCHI insulation strip included in the hardware assembly.
- Warranty: 10-year quality warranty covers frame unfading/peel-off and properly working hardware and accessories under correct operation.
- Compatibility: Confirm that the handle finish, hinge type, and lock configuration match the project opening type and frame profile before specification.
Basic Parameters
| Performance Dimension | Declared Value | What It Means | Test Method & Evidence to Request |
|---|---|---|---|
| Thermal Insulation | U-factor 0.23; SHGC 0.20; Standard DERCHI insulation strip | Heat transfer performance of the window assembly, expressed through U-factor and SHGC ratings. | 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 | Structural capacity of the window to withstand wind loads at a specified test pressure. | 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 | Resistance to water penetration under wind-driven rain at a specified test pressure. | 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) | Air leakage rate through the window assembly under a pressure differential. | 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 | Reduction of airborne sound transmission through the window, expressed in decibels. | 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 |
|---|---|
| Frame Material | Aluminum |
| 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 in Black and Silver |
| Hinge | WEHAG Hinge |
| Lock Point | Black Six Point Lock (Invention patent) |
| Insulation Strip | Standard DERCHI insulation strip |
| Opening Way | Outward Opening / Awning |
| Optional Package | New 48 Pack / New 88 Pack |
- Confirm opening way: Outward Opening or Awning
- Select handle finish: Black or Silver
- Choose optional package: New 48 Pack or New 88 Pack
- Confirm glass configuration: double tempered glass with argon gas 5mm+27A+5mm or alternative
- Provide frame dimensions and opening quantity for each unit type
Advantages
- 15+ years of manufacturing experience in aluminum windows and doors.
- 70,000+ ㎡ factory area with a 4,000 ㎡ showroom and 600+ employees.
- 600,000+ ㎡ annual output with 200,000+ successful project cases.
- Authorized by NFRC, CE, AS2047, CSA, and ISO9001 certifications.
- 100+ national patents covering invention, appearance, and design categories.
- 20+ experts R&D team for customization collaboration.
- 100% full inspection performed before shipment, reducing project risk through pre-shipment quality verification.
- DERCHI states the 100% full inspection before shipment in its own product specifications.
- One-stop customer service from ordering through shipment.
- Engineering and supervising service to guide on-site installation.
- 10 years quality warranty provided.
Application Scenarios
| Scenario | Fit Basis | Confirm Before Specification |
|---|---|---|
| Coastal or high-precipitation commercial buildings | Evidenced for commercial buildings in coastal or high-precipitation regions. | Confirm frame treatment and sealant selection for the specific exposure zone. |
| High-rise commercial structures | Evidenced for high-rise commercial structures. | Confirm glazing thickness and frame profile against the project's structural requirements. |
| Buildings near traffic corridors | Evidenced for buildings located near traffic corridors. | Confirm glazing configuration against the project's noise-control requirements. |
| Apartments and residential buildings | Evidenced for apartments and residential buildings. | Confirm opening type and hardware configuration against occupant ventilation and safety requirements. |
| Office buildings | Evidenced for office buildings. | Confirm glazing type and frame profile against the project's thermal requirements. |
| Hotels | Evidenced for hotels. | Confirm frame finish and hardware selection against the project's use-case requirements. |
| Home offices | Evidenced for home offices. | Confirm frame profile depth and opening mechanism against available wall space. |
| Exterior applications | Evidenced for exterior applications. | Confirm weather-sealing and drainage configuration against local climate exposure. |
FAQ
What must be confirmed technically before production?
Price is based on buyer-specific requirements including shop drawing, frame color, glass type, glass thickness, glass color, and Argon gas fill. Delivery time is 25-35 days after deposit and drawing confirmation.
What should buyers prepare for volume procurement?
Buyers should finalize shop drawings and confirm frame color, glass type, glass thickness, glass color, and Argon requirements before placing a deposit. A 10-year quality warranty covers the products.
What product formats are available for procurement?
Both window system components (profile, hardware, accessories, glass) and finished products ready for installation are supplied.
How to choose between thermal-break and non-thermal-break aluminium windows?
Aluminium windows incorporate thermal breaks and energy-efficient glazing for improved insulation performance. U-Factor ranges from 0.26 to 0.43 and SHGC from 0.19 to 0.56 across configurations.
What hardware brands are available for project quality requirements?
Hardware options include Kin Long, Roto, Siegenia, Guise, and ALU-K, with lock hardware integrated into the window system.
What sealant and thickness specifications apply?
Sealant options include EPDM and silicone sealant, with profile thickness of 1.4mm for windows and 2.0mm for doors.
