Luminaire housing made of extruded aluminium profile; extremely slim design (only 42 x 42 mm); light tight final end caps made of aluminium; no visible screws; angular design; surface black powder coated; suspended luminaire with 1500mm cable suspension; with integrated tool-less suspension height adjustment; spring clip attachment to the luminaire; freely positionable; incl. feeder cable; extruded profile for improved thermal management; high gloss reflector with faceted design; Reflector chrome; direct/indirect illumination characteristic; light colour direct light component: 3000 K; light colour indirect light component: tunable white diodes (2700-6500 K); binning initial MacAdam ≤ 3 SDCM; CRI ≥ 80; min. 90% of luminous flux after 50000 operating hours; energy efficient LEDs with high CRI; UGR ≤ 13; VDU compatible workplace luminaire according to DIN EN 12464-1; luminance above 65° ≤ 1500 cd/m²; 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; light source replaceable by an authorized professional; control gear replaceable by an authorized professional; General: Ceiling, Suspended, black, Reflector chrome, RAL9005, IP20, indirect 3190 lm, direct 3350 lm, total 6540 lm LED: 3000 K, CRI ≥ 80, L90 / 50000 h, initial MacAdam ≤ 3 SDCM , MR 0.54, MDER 0.49 Optical: Reflector, symmetric, UGR < 13, ≥65° <1500 cd/m², PstLM ≤ 1.0, SVM ≤ 0.4 Electrical: DALI-2 D/I separately controllable, 56 W, PC1 220-240V, 117 lm/W, 2 DALI Addr. Physical: length 1857 mm, width 42 mm, height 42 mm 074-62D6548R