Particularly flat luminaire housing, extruded aluminum profile, naturally anodized, visible height 42mm, front sides and side parts made of naturally anodized aluminum with continuous longitudinal groove, rounded towards the front of the luminaire. Direct/indirect light distribution, direct component using frosted PMMA panel, homogeneous light emission through lateral LED light coupling and superimposed aluminum reflector in highly reflective white coating, with micro-perforation for easy wall illumination. LED driver design integrated. Electrical connection via 3-pin connection terminal with plug-in contact technology.