Series: FLAT POLYMERO KREIS Decorative round surface-mounted luminaire. Base: metal, powder-coated. Diffuser made of plastic (polycarbonate), opal, shockproof. Diffuser fastening: patented push system. Suitable for ceiling mounting, wall (surface). Slave luminaire. Can only be operated in combination with corresponding master luminaire. Colour: white Diameter: 360 mm Height: 87 mm Lamp: LED Socket: without socket Colour temperature: 4000K Colour rendering index (CRI): 83 System power: 21 W Rated luminous flux: 2150 lm Luminous efficiency: 102 lm/W Control gear: Converter not necessary Protection class: I Type of protection: IP 40