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 a frosted PMMA pane, homogeneous light emission through side LED light coupling and an aluminum reflector with a highly reflective white coating, with micro-perforations for easy wall illumination. Integrated LED driver design. Electrical connection and connection of the control cable via a 5-pin connection terminal using plug-in contact technology.