Hexagonal light housing from aluminium extruded profile, seamlessly welded; suitable for single or group installation; quick mounting system without tools; surface powder coated; can be combined with all HEX-O ceiling and TRIG-O ceiling luminaires and acoustic elements; satinised or microprismatic PMMA cover; same luminance for all size versions; plug-in terminals for through wiring; energy-efficient LEDs with very good colour rendering