This is not a window. It is FIN-Project Ferro-line, a modular window system that allows you to use different materials from inside to outside and from room to room. For example, aluminium on the outside and wooden surfaces in the living room, glass in the kitchen and FoRres, a bio-sourced material, in the bedrooms.
The heart of the window is a multi-chamber profile made of recycled PVC, welded in the corners, which guarantees exceptional air tightness and insulation (Uw up to 0.77 W/m²k with triple glazing).
The design of the Ferro-line version is both modern and pure, reminiscent of the style of steel windows.