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: 460 mm Height H: 93 mm Lamp: LED Socket: without socket Colour temperature: 4000K Colour rendering index (CRI):80 System power 1: 19 W Rated luminous flux 1: 2050 lm Luminous efficiency: 108 lm/W Control gear: Regulated power supply Protection class: I Type of protection: IP 40