DERCHI heavy duty aluminium windows are aluminum casement windows with outward opening and awning configurations, engineered for commercial, residential, and exterior applications. The product line carries NFRC, CE, AS2047, CSA, and ISO9001 certifications, with additional testing and certification available upon request.
- 100% full inspection before shipment from a 70,000+ m² factory with 600+ employees
- 600,000+ m² annual output serving 700+ distributors across 100+ countries
- 25-35 days delivery after deposit and drawing confirmed, with one-stop customer service from ordering to shipment
Product Details
The DERCHI heavy duty aluminium window is an aluminum casement window built in a 70,000+ m² factory with 600+ employees, constructed with a 1.8 mm aluminum profile at 118 mm frame width and an S18 multi-cavity thermal insulation strip. The glazing unit uses 5 mm double tempered glass with argon gas and a PVDF aluminum strip spacer, and the sash operates through outward opening or awning action on a 13-inch flat open friction hinge independently developed by DERCHI, with a WEHAG hinge and six-point locking mechanism securing the operating sash.
Procurement teams should confirm glass configuration, color finish, and layout combination against project energy and aesthetic requirements before ordering, as the window is available in seven glass types, twelve color finishes, and ten layout configurations. Buyers should verify that the applicable certifications—NFRC, CE, AS2047, CSA, and ISO9001—match local building code requirements, confirm the 25–35 day delivery timeline after deposit and drawing approval, and note that the 10-year warranty covers frame finish, hardware, and accessories with 100% pre-shipment inspection on every unit.
Product Features
- WY-118L model with 118MM frame width and 1.8MM profile thickness — this dimension set fits heavy-duty structural applications requiring wider aluminum profiles.
- Outward opening and awning operation — this opening direction preserves interior floor space and permits ventilation during rain.
- WEHAG handle available in black, silver, and antique bronze — these finish options coordinate hardware with adjacent fixtures and trim.
- Six-point locking mechanism with invention patent — this lock configuration engages the sash at six points for higher security projects.
- 13-inch flat open friction hinge developed by DERCHI — this hinge size maintains stable outward sash operation on larger casement panels.
- S18 multi-cavity thermal insulation strip — this strip geometry separates interior and exterior aluminum profiles for thermal performance.
- Double tempered glass with argon gas fill — this glazing package achieves 35 dB sound insulation for noise-sensitive installations.
- U-factor of 0.23 and SHGC of 0.20 — these energy metrics target climate zones with high cooling loads.
- Water tightness at 700Pa, air tightness at 1.2 m³/(m·h), and wind pressure resistance at 5K Pa — these ratings apply to exposed or high-wind sites.
- DERCHI customized handle designs and transmission boxes for WY-118L — this customization scope accommodates project-specific hardware integration.
Customizable Styles
- Seven glass configurations are orderable: single, tempered, double-glazed, triple, insulating, laminated, and frosted glass.
- 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.
- Ten customizable layout configurations are available, including combinations of fixed panels, casement sashes, and awning openings.
- Opening way is configurable as Outward Opening or Awning.
- Handle finish is configurable in Black or Silver with the WEHAG handle.
- Optional packaging is available as New 48 Pack or New 88 Pack.
- Glass selection determines thermal performance: double tempered glass with argon gas (5mm+27A+5mm, PVDF Aluminum Strip) yields a U-factor of 0.23 and SHGC of 0.20.
Hardware Accessories
- WEHAG Handle available in Black and Silver is the handle specification buyers should review for hardware compatibility
- WEHAG standard no-base handle offered in black, silver, and antique bronze
- DERCHI independently developed customized handle designs available for the WY-118L series
- WEHAG Hinge used as the standard hinge component
- 13-inch flat open friction hinge independently developed by DERCHI supports stable outward sash operation
- DERCHI customized transmission box included in the hardware system
- WEHAGE lock point and lock seat system operates with a six-point locking mechanism
- Black Six Point Lock carries an invention patent
- Window system ships as a complete package including profile, hardware, accessories, and glass ready for installation
- 10-year quality warranty covers hardware and accessories working properly under correct operation
- Confirm handle finish selection and hinge configuration against project aesthetic and operational requirements before ordering
Basic Parameters
| Performance Dimension | Declared Value | What It Means | Evidence to Request |
|---|---|---|---|
| Thermal Insulation | U-factor 0.23, SHGC 0.20, Standard DERCHI insulation strip | Measures heat transfer through the window assembly; a lower U-factor indicates better thermal resistance. | Request the thermal test or simulation report per NFRC or ISO 10077-2 and confirm the declared product configuration and boundary conditions. |
| Wind Pressure Resistance | 5K Pa | Measures the window's structural ability to withstand wind loads without deformation or failure. | Request the wind-pressure test report and confirm the tested specimen size, anchorage, and installation conditions per ASTM E06.51, FGIA NAFS, or ISO 6613. |
| Water Tightness | 700 Pa | Measures resistance to water penetration under wind-driven rain exposure. | Request the water-penetration test report and confirm the tested pressure, spray exposure, and assembly configuration per ASTM E06.51, FGIA NAFS, or ISO 6613. |
| Air Tightness | 1.2 m³/(m·h) | Measures air leakage through the window assembly at a specified pressure differential. | Request the air-leakage test report and confirm the pressure differential, specimen area, reporting units, and tested configuration per ASTM E06.51, FGIA NAFS, or ISO 6613. |
| Sound Insulation | 35 dB | Measures the window's ability to reduce airborne sound transmission between spaces. | Request the acoustic test report and confirm the tested construction, glazing, and reported acoustic metric per ISO 10140-1 or ASTM E90. |
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 / Silver) |
| Hinge | WEHAG Hinge (13-inch friction hinge) |
| Lock Point | Black Six Point Lock (Invention patent) |
| Insulation Strip | DERCHI S18 multi-cavity thermal insulation strip |
| Opening Way | Outward Opening / Awning |
| Optional Package | New 48 Pack / New 88 Pack |
| Delivery Time | 25–35 days after deposit and drawing confirmed |
| Warranty | 10 years quality warranty |
- Confirm window opening dimensions (width × height) for each unit
- Select glass configuration from seven options: single, tempered, double-glazed, triple, insulating, laminated, or frosted glass
- Select layout configuration from ten options including combinations of fixed panels, casement sashes, and awning openings
- Select color finish: two PVDF options (Retro Green, Mint Gold) or ten stock color options ranging from wood-grain to solid metallic and matte finishes
- Select handle finish: Black or Silver
- Select optional package: New 48 Pack or New 88 Pack
- Approve shop drawings before production start
- Arrange deposit payment to initiate production
Advantages
- 15+ years of experience in aluminum windows and doors with a 70,000+ m² factory and 600+ employees
- 600,000+ m² annual output
- 100% full inspection before shipment
- Authorized by NFRC, CE, AS2047, CSA, and ISO9001
- 100+ national patents including invention patents, 50+ industry honors, and a 20+ expert R&D team
- OEM/ODM capability based on factory scale and customization options, documented in the supplier's own product input
- One-stop customer service from ordering to shipment, including engineering and supervising service for installation
- 10-year quality warranty
Application Scenarios
| Scenario | Fit Basis | Confirm Before Specification |
|---|---|---|
| Coastal or high-precipitation commercial buildings | Evidenced for commercial buildings in coastal or high-precipitation regions | Local wind-load and corrosion-protection code requirements |
| High-rise commercial structures | Evidenced for high-rise commercial structures | Structural requirements for building height and glazing size |
| Buildings near traffic corridors | Evidenced for buildings located near traffic corridors | Local noise-control requirements |
| Commercial facilities with energy efficiency needs | Evidenced for commercial facility management with energy efficiency needs | Local energy-code requirements and thermal configuration options |
| Residential buildings, apartments, and villas | Evidenced for residential buildings, apartments, and villa projects | Local egress requirements and finish availability |
| Hotels, office buildings, and home offices | Evidenced for hotels, office buildings, and home offices | Local fire-code and occupancy classification |
| Exterior applications across commercial and residential projects | Evidenced for exterior applications across commercial, residential, and exterior project types | Local weather-exposure conditions and installation method |
FAQ
What must be confirmed technically before ordering?
The window system supply includes profile, hardware, accessories, and glass, so buyers must confirm these component specifications before placing an order.
What should buyers prepare for volume procurement?
Buyers should prepare complete specifications covering the profile, hardware, accessories, and glass required for the window system supply.
How is pricing determined for the windows?
Price is based on the buyer's specific requirements, including drawings, color, and glass type.
What is the delivery timeline after order confirmation?
Delivery takes 25-35 days after deposit and drawing confirmation.
What warranty and quality inspection apply?
The product carries a 10-year quality warranty, and every unit undergoes 100% full inspection before shipment.
What packaging options are available for shipment?
Optional packaging includes New 48 Pack and New 88 Pack, with finished products delivered ready for installation.
Is installation support available for project buyers?
Engineering and supervising service for installation is provided alongside the finished window products.
What compliance documents should buyers confirm for specialized project requirements?
For projects involving thermal insulation, fire protection, or acoustic insulation requirements, buyers should confirm the applicable compliance documents before finalizing specifications.
