U2B-M210-MI-830-055S Recessed diffusor with maximum efficiency. Micro-optical foil optics, opal acrylic (PMMA), diffuse, optical deglaring foil light distribution. High luminous flux and efficiency. Dimensions: 595 mm x 595 mm x 77 mm. M600, installation as pure lay-in luminaire for modular ceilings with basic exposed tee grid system. Flat panel diffuser with a Micro-optical foil on a clear glass layer for a bright and uniform illumination with wide interdistances. Luminous flux: 5500 lm, Luminous efficacy: 145 lm/W. Power: 38.0 W, not dimmable. Frequency: 50/60Hz AC. Voltage: 220-240V. Electrical isolation class: class II. LED with very good light maintenance; at 50000 hrs the luminaire retains 95% of it's initial flux (Tq=25°C). Correlated colour temperature: 3000 K, Colour rendering ra: 80. Colour consistency (McAdam ellipse): ≤ 3 SDCM. Photobiological safety IEC/TR 62778: RG0. Lacquered sheet steel housing, RAL9210 - white. IP protection level: IP20/IP40. IK protection level: IK03. Replaceable (LED only) light source by a professional. Replaceable control gear by a professional. Energy efficiency class of the light source according to EU regulation 2019/2015: C. Glowwire: 650°C. 5 years warranty on luminaire and driver. Certifications: CE, ENEC. Luminaire with halogen free leads. The luminaire has been developed and produced according to standard EN60598-1 in a company that is ISO9001 and ISO14001 certified.