
60.4mm hook edge visible surface (border embedded). Ultra-high glass-aluminum frame ratio. More harmonious and close to the natural environment.

Crafted from high-performance 6060-T66 medical-grade aluminum alloy and patented stainless steel technology, combined with innovative craftsmanship for extraordinary durability.

Imagine world-class technology, meticulously crafted into an elegantly slim system. Each panel is only 34mm thick, resulting in a lighter, more streamlined design.

Almost every detail of the system can be personalized to match bold architectural concepts, allowing creativity without boundaries.

Patented high-performance insulated glass system allows for elegant glass panels customized to different lifestyles and severe weather conditions, showcasing exceptional quality.

A low-maintenance system combined with advanced acoustic control and thermal insulation technology supports an ideal living environment throughout the year, truly achieving both comfort and efficiency.

The SLEEK86 series narrow-frame inward opening tilt-turn windows feature a minimal visible frame overlap of just 60.4mm, delivering a sleek, minimalist visual experience. Compared to traditional inward opening tilt-turn windows, the SLEEK86 significantly enhances the viewing area, providing abundant natural light that brightens the interior space. Its design eliminates the base and incorporates a hidden side handle, complemented by original Sobinco concealed hardware imported from Belgium, redefining minimalist aesthetics for modern living.
It uses a special alloy die-cast corner bracket, with a sash bearing capacity of up to 90–180 kg, greatly improving structural strength and safety. The glass groove supports a maximum thickness of 42mm, allowing flexibility in choosing different types of glass. Additionally, the series supports optional professional ground-to-ceiling railing design, paired with clean lines to showcase a contemporary look and elevate household style.
| Performance Index | Value | Unit | Level |
| Thermal Insulation | 2.0 | W/(m²·K) | 6 |
| Sound Insulation | 38 | dB | 4 |
| Water Tightness | 750 | Pa | 6 |
| Air Tightness | 0.5 | m³/(m²·h) | 8 |
| Wind Pressure Resistance | 5.0 | kPa | 9 |
Craftsmanship manufacturing
Easy Installation, Smooth Performance, Low maintenance cost
Northwindow focuses on designing and manufacturing modern sleek aluminum window door systems for global luxurious houses homeowners
AS2047 EN14351 UK CE CA and more
15+Technical World First Patents.
Founded in Foshan city, world-famous biggest production base of aluminum profiles, windows and doors in China, Northwindow manufactures high end ultra narrow Minimal Aluminum frame windows and glass doors for brighter and healthier spaces.
Original Minimalist Window Systems, A unique range of solutions for modern house
We Cooperate with global contractors.
Welcome to become our special dealer in your city
From the date of successful installing Nothwindow product
Northwindow sealing system, ensuring waterproof performance with 5 years’ guarantee.
Northwindow offers life time online maintenance service and are always happy to assist local contractor to solve your problem if needed in case.