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). Colour: white Diameter D: 515 mm Height H: 98 mm Lamp: LED Socket: without socket Colour temperature: 4000K Colour rendering index (CRI):83 System power 1: 19 W Rated luminous flux 1: 2100 lm Luminous efficiency: 111 lm/W Control gear: AC Strom, dim.Ph.an-/abschnitt Protection class: I Type of protection: IP 40