Series: FLAT KREIS Decorative round surface-mounted luminaire. Base: plastic. Mouth blown 3-layer opal glass (Triplex glass) with satin finish. Glass fastening: bayonet fixing. Homogeneous and smooth light distribution. Colour: white Diameter: 500 mm Height: 100 mm Lamp: LED exchangeable Socket: without socket Colour temperature: 3000K Colour rendering index (CRI): 83 System power: 19 W Rated luminous flux: 1900 lm Beam angle Down: 117° Luminous efficiency: 100 lm/W Control gear: AC power, DALI dimmable Protection class: I Type of protection: IP 43