DERCHI aluminium windows for Queenstown are aluminium casement windows with outward/awning operation, branded DERCHI and meeting NFRC, AS2047, and CE standards.
- Aluminium windows supplied for Queenstown commercial, residential, and exterior applications
- 70,000+ m² factory with 600+ employees and 100% full inspection before shipment
- 200,000+ successful cases delivered to customers in more than 100 countries
Product Details
The DERCHI aluminum casement window is constructed with a 1.8mm profile thickness and a 118mm frame width, utilizing an S18 multi-cavity insulation strip for thermal separation. Operation is configured for outward opening or awning functionality, supported by WEHAG hardware including a black six-point lock with an invention patent. The double tempered glass unit, specified as 5mm+27A+5mm with argon gas and a PVDF aluminum strip between the panes, is assembled through a production process that includes surface treatment, profile cutting, glass installation, frame assembly, and sealing before final packing.
When configured with double tempered argon-filled glass, the window achieves a U-factor of 0.23 and an SHGC of 0.20, with seven glass configurations and ten customizable layout configurations available to match project requirements. Buyers should confirm that the selected glass and layout configuration suits the project's regulatory and climate requirements before finalizing specifications. The 25-35 day delivery time after deposit and drawing confirmation, the 10-year quality warranty, and the engineering supervising service for installation guidance define the project planning and post-purchase support parameters.
Product Features
- WY-118L Aluminum Casement Window carries a 118mm frame width and 1.8mm profile thickness, which sets the structural opening dimension and frame load capacity for specification.
- Outward Opening / Awning operation projects the sash externally, fitting installations where interior clearance is limited or rain-ventilation is needed.
- WEHAG no-base handle comes in black, silver, and antique bronze finishes, coordinating with interior hardware color schemes.
- Black Six Point Lock with invention patent guides security-level selection for ground-floor or accessible openings.
- 13-inch flat open friction hinge independently developed by DERCHI sets the sash stay position for controlled outward airflow.
- DERCHI independently develops and customizes transmission boxes for the WY-118L system, requiring matching proprietary drive components when specifying the lock mechanism.
- Double Tempered Glass with Argon gas fill is available as a glazing option for projects targeting thermal and acoustic performance.
- S18 multi-cavity insulation strip combined with PVDF Aluminum Strip forms the thermal break configuration for thermally broken frame requirements.
- Water tightness at 700Pa, air tightness at 1.2 m³/(m·h), wind pressure resistance at 5K Pa, and sound insulation at 35 dB match ratings to local wind exposure zones and noise environments.
- Complete window system supply including profile, hardware, accessories, glass, and finished products is available, defining the supply scope based on project assembly capability.
Customizable Styles
- Seven glass configurations available: single, tempered, double-glazed, triple, insulating, laminated, and frosted glass; the default specification is 5mm+27A+5mm double tempered with argon.
- 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.
- WY-118L series supports ten customizable layout configurations combining fixed panels, casement sashes, and awning openings.
- Opening way: outward opening or awning.
- Optional packaging: New 48 Pack or New 88 Pack.
- Selecting the double tempered argon glass configuration yields a U-factor of 0.23 and SHGC of 0.20.
Hardware Accessories
- WEHAG handle in black and silver finishes
- WEHAG hinge
- Black Six Point Lock with invention patent
- WEHAG no-base handle in black, silver, and antique bronze finishes
- 13-inch flat open friction hinge independently developed by DERCHI for stable outward sash operation
- DERCHI customized handle designs available for the WY-118L series
- WEHAGE lock point and lock seat system with six-point locking mechanism
- DERCHI-developed transmission box
- 10-year quality warranty covers hardware and accessories working properly under correct operation
Basic Parameters
| Performance Dimension | Declared Value | What It Means | Test Evidence to Request |
|---|---|---|---|
| Thermal Insulation | U-factor 0.23; SHGC 0.20; Standard DERCHI insulation strip | Measures heat transfer through the window assembly and solar heat gain; 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 | 5K Pa | Measures the window's ability to withstand wind loads without structural failure; 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 | 700Pa | Measures resistance to water penetration under wind-driven rain; 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 through the window assembly under 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 | Measures acoustic attenuation through the window assembly; 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 |
|---|---|
| Profile Thickness | 1.8mm |
| Frame Width | 118mm |
| Glass Configuration | 5mm+27A+5mm Double Tempered with Argon |
| Opening Way | Outward Opening / Awning |
| U-factor | 0.23 |
| SHGC | 0.20 |
| Water Tightness | 700Pa |
| Air Tightness | 1.2 m³/(m·h) |
| Wind Pressure Resistance | 5 kPa |
| Sound Insulation | 35 dB |
| Warranty | 10 years |
| Delivery Time | 25-35 days after deposit and drawing confirmed |
- Confirmed production drawings
- Glass configuration selection
- Color finish selection
- Layout configuration selection
- Opening way confirmation
- Package selection
- Deposit arrangement
Advantages
- DERCHI manufactures aluminum windows and doors from a 70,000+ m² factory with 600+ employees and 15+ years of experience.
- 600,000+ m² annual output across 200,000+ successful cases supports project-scale order fulfillment.
- 100% full inspection before shipment controls quality risk on every order.
- NFRC, CE, AS2047, CSA, and ISO9001 certifications document compliance for international projects.
- 100+ national patents and a 20+ expert R&D team support product development for buyer-specified requirements.
- Customization based on buyer's specific requirements and engineering and supervising service for installation reduce project risk by aligning window systems to project drawings and guiding on-site installation.
- One-stop customer service from ordering to shipment and a 10-year quality warranty cover the order lifecycle.
- 700+ distributor network serves customers in 100+ countries.
Application Scenarios
| Scenario | Fit Basis | Confirm Before Specification |
|---|---|---|
| Commercial buildings in coastal or high-precipitation regions | Evidenced application for aluminium casement windows in commercial coastal and high-precipitation environments | Corrosion-resistance grade and weather-sealing specification for the specific exposure zone |
| High-rise commercial structures | Evidenced application for high-rise commercial buildings | Wind-load adequacy for the installed height and facade position |
| Buildings near traffic corridors | Evidenced application for buildings located near traffic corridors | Acoustic suitability for the specific noise environment |
| Residential buildings and apartments | Evidenced application for residential buildings and apartments | Opening configuration and egress compliance for residential code requirements |
| Office buildings and hotels | Evidenced application for office buildings and hotels | H1 Building Code thermal compliance and glazing configuration |
| Home offices | Evidenced application for home office spaces | Thermal comfort and ventilation requirements for occupancy duration |
| Exterior applications | Evidenced application for exterior installations | Weather-exposure rating and drainage detail for the wall assembly |
FAQ
What must be confirmed technically before ordering?
Price is calculated based on shop drawings or window schedules, frame color, and glass type, so these specifications must be finalized before an order is placed. Customization follows the buyer's specific requirements, and the complete window system supply includes profile, hardware, accessories, and glass.
What should buyers prepare for volume procurement?
Buyers should prepare finalized shop drawings and window schedules for accurate pricing, confirm frame color and glass type selections, and coordinate through the one-stop customer service covering ordering to shipment.
What warranty terms apply to these aluminium windows?
A 10-year quality warranty applies to the aluminium window products.
How are products inspected before shipment?
100% full inspection is conducted before shipment, and finished products are delivered ready for installation.
What installation support is available?
Engineering and supervising service for installation is provided alongside the finished window products.
How do material price fluctuations affect window and door costs?
Pricing is calculated based on shop drawings, window schedules, frame color, and glass type, so finalized specifications should be submitted to lock in current pricing.
What glazing configuration should be specified?
Glass type must be specified as part of the window system supply because pricing depends on it.
Which compliance documents and test reports should be confirmed for the project?
Request applicable building code compliance documentation and test reports for the specified window system before finalizing the order.
