Series: FLAT POLYMERO KREIS Decorative round surface-mounted luminaire. Base: metal, powder-coated. Diffuser made of non-yellowing plastic (PMMA), opal. 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 D: 360 mm Height H: 87 mm Lamp: LED Socket: without socket Colour temperature: 4000K Colour rendering index (CRI):83 System power 1: 21 W Rated luminous flux 1: 2000 lm Luminous efficiency: 95 lm/W Control gear: Converter not necessary Protection class: I Type of protection: IP 40