Series: SONIS High-efficiency LED louvre surface-mounted luminaire. Housing: metal, powder-coated. Alea optical system: Reflector structure (ABS, Aluminium-coated, highly polished) with integrated diffuser made of non-yellowing plastic (PMMA) opal for glare-free light at the workstation. Narrow beam, brilliant luminous effect. Suitable for Ceiling mounting. Driver integrated. Perfect for office areas (RUG < 19) and environments with computer screens in accordance with EN 12464-1. Colour: white Length: 602 mm Width: 602 mm Height: 47 mm Lamp: LED Socket: without socket Colour temperature: 4000K Colour rendering index (CRI): 80 System power: 24 W Rated luminous flux: 3500 lm Beam angle Down: 75° / 77° Luminous efficiency: 146 lm/W Control gear: Converter, dimmable, DALI Protection class: I Type of protection: IP 20