A slim luminaire for pendant mounting, light distribution: direct/indirect. DALI dimmable electronic ballast. Housing: sheet steel, white (similar to RAL9016) powder-coated. End caps: sheet steel, white (similar to RAL9016) powder-coated. Light direction via a luminance-reducing, multi-layer optic (LRO) made of PMMA, with backlight, UGR < 19. Closed optic system to prevent damage due to electrostatic discharge. Ideal for schools and offices. Protection class I, IP20, impact resistance: IK03. Electrical connection via pre-installed power cable (2.5m). Includes LED module with 4000K. Y-suspension connection included - suspension cable with ceiling canopy must be ordered separately (22171581). Dimensions: 1542 x 162 x 50 mm Lamp power: 54.1 W Lamp luminous flux: 6939 lm Lamp luminous efficacy: 128 lm/W Weight: 6.5 kg