Why architects specify Keller Minimal presence, maximum glass. With a 21mm facing width on the leaf profile and glass proportions reaching up to 98%, Keller installations feel like openings in the architecture rather than windows placed into it. Keller Sliding For garden-facing living spaces and master suites. Panels up to 12m² per leaf, heights up to 6 metres, and effortless one-hand operation make it ideal for dramatic living rooms, terraces, and pool-facing openings. Keller Curve • Highline • Pivot • NGS Curved facades, double heights, statement entrances. Whether the villa calls for curved geometries, exceptional vertical scale, pivoting glass entries, or next-generation motorised sliding, Keller extends minimal design into complex architectural moments.