Luminaire housing from extruded aluminium profile, round design (only ø 61 mm); no visible screws; designed for lighting systems; linear design; surface powder coated; for ceiling surface mounting or suspended mounting; pendant fitting with cable suspension; height adjustment without tools; spring clip attachment to the luminaire; incl. feeder cable; extruded profile for improved thermal management; high gloss reflector with faceted design; either with direct or direct / indirect light distribution; indirect light component with integrated PC boards and high quality lens system for maximum, homogeneous ceiling illumination, separately controllable; energy-efficient LEDs with very good colour rendering