Luminaire housing made of extruded aluminium; for trimless installation in plasterboard ceilings; special edge design with perforations for better adhesion of filler; suitable for ceiling thickness of 8-20mm; surface raw; luminaire profile with pre-assembled converter unit can be pre-mounted; light inset can be installed without tools; light inset made from extruded profile for improved thermal management (reflector version); HPO (High Performance Opal) cover for uniform illumination; or with specially computed, asymmetrical lens for homogeneous vertical lighting intensity; or high-quality, aluminium, vapour deposition coated reflector with faceted lens design; screen work capable luminaire as per DIN EN 12464-1 (UGR < 19) for reflector version; energy-efficient LEDs with very good colour rendering; binning initial ≤ 3 MacAdam; available in the light colours 3000K and 4000K; CRI ≥ 80; min. 80 % of the luminous flux after 50000 hours; degree of protection IP 20; PC I; photobiological safety according to IEC 62471 risk group 0 for HPO and wallwasher versions; optionally non-dimmable or DALI-2 control