Sheet steel housing in square design, prepared for attaching end faces or luminaire connectors made of steel, direct / indirect light distribution using reflection-enhanced MIRO® aluminum micro parabolic louvre, satin finish with low-cross-section slats, for computer workstations, 65° < 1000 cd/m² all-round glare control in accordance with the current standard DIN-EN 12464-1, self-locking, with light strip installation the louvre is optically continuous, electrical connection and connection of the control cable via 5-pin connection terminal using plug-in contact technology.