Luminaire housing made of extruded aluminium profile; extremely slim design (only 42 x 42 mm) linear; converter integrated into luminaire housing; no visible screws; angular design; for lighting systems; surface black powder coated; for suspended mounting (1500 mm cable suspension as an accessory); with integrated tool-less suspension height adjustment; spring clip attachment to the luminaire; extruded profile for improved thermal management; light colour 4000 K; binning initial MacAdam ≤ 3 SDCM; CRI ≥ 80; min. 90% of luminous flux after 50000 operating hours; energy efficient LEDs with high CRI; high quality reflector with micro-faceted, aluminum-vaporised surface; asymmetrical light distribution with precise radiation characteristic; direct/indirect illumination characteristic; indirect light component with integrated PC boards and high quality lens system for maximum, homogeneous ceiling illumination, separately controllable; degree of protection IP20; PC1 220-240V; internal wiring in light halogen free; incl. DALI-2 converter; accessories are listed separately; light source replaceable by an authorized professional; control gear replaceable by an authorized professional; General: Ceiling, Suspended, black, Reflector chrome, RAL9005, IP20, indirect 4220 lm, direct 5120 lm, total 9340 lm LED: 4000 K, CRI ≥ 80, L90 / 50000 h, initial MacAdam ≤ 3 SDCM , MR 0.74, MDER 0.67 Optical: Reflector, wall floor, PstLM ≤ 1.0, SVM ≤ 0.4 Electrical: DALI-2, 76 W, PC1 220-240V, 123 lm/W, 2 DALI Addr. Physical: length 1700 mm, width 42 mm, height 42 mm 074-7736638R