The glass of DERCHI doors and windows is manufactured by Hong Kong Xinyi Glass (stock code: HK0868), and the production standards are strictly controlled to ensure the safety and beauty of the glass. Choose us, not only choose a door and window, but also choose a clear, safe and comfortable living experience.
DERCHI doors are designed and built for optimum performance using the latest energy saving technology, providing maximum savings in any climate. They are the most energy-efficient dual-pane replacement doors in the industry with high performance insulated glass systems that exceed Energy Star requirements.








| SERIES | N2 Series Aluminum Casement Window |
| BRAND | DERCHI |
| PROFILE | 6063-T5 thermal break aluminum profile |
| THICKNESS | 2.0 mm aluminium thickness |
| AVAILABLE SIZE |
Opening Panel: Width 510-850 mm / Height 595-2400 mm Each Fixed panel ≤ 6 m² |
| GLASS |
Automotive Grade Tempered Glass Double / Triple tempered glass Laminated / Low-E / Reflective / Tinted Glass |
| MIDDLE HOLLOW | 5MM + 27A + 5MM |
| HARDWARE | Germany brand WEHAG |
| SURFACE TREATMENT | Powder Coating, Anodized, Wooden Grain, PVDF Coating |









The system utilizes premium 6063-T5 thermal break aluminum profiles with a sturdy 2.0 mm wall thickness, delivering exceptional structural integrity and energy efficiency.
We use certified Hong Kong Xinyi automotive-grade tempered glass. Configurations include double or triple glazing (such as 5MM + 27A + 5MM middle hollow spacer) with Low-E, laminated, tinted, or reflective coatings.
Our casement windows are fitted with high-end German WEHAG hardware, guaranteeing smooth operation, long-lasting durability, and high security.
A variety of surface treatments are available to fit your architectural style, including high-durability powder coating, anodized finishes, realistic wooden grain transfers, and fluorocarbon PVDF coating.
For opening panels, the available width spans from 510 mm to 850 mm, with heights from 595 mm up to 2400 mm. Each fixed glass panel can support up to 6 square meters.
DERCHI insulated window systems are engineered to exceed Energy Star performance ratings, maximizing heat insulation in winter and minimizing heat absorption in summer to reduce climate control costs.