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.