Highly efficient, low-profile recessed luminaire for direct illumination, intended for maintenance from the top. Full visual comfort is ensured with the latest optical and electrical components. Multi-layered optics. Highly transparent microprismatic diffuser protects against glare and provides pleasant, diffused light. Opal foil ensures a uniform light, without visible light sources. The tempered protection glass provides a smooth surface for easy maintenance. Housing is made of a 0,8 mm thick steel sheet with a final coating of a special antibacterial white epoxy polyester powder, resistant to aggressive cleaning agents. Luminaire construction ensures complete sealing with the ceiling. Supplied with mounting kit. External power supply included. Total lighting fitting power: 37.0W. Light color temperature 4000 K with color reproduction index of (CRI) >80. Led working life is 60000 hours, with condition that flux doesn't go below 90% of initial flux (L90B10). Initial lighting fitting flux is 4600lm. Lighting fitting efficiency not below 124lm/W. Light color deviation (SDCM) less than 3. Emission degree is UGR < 19. Lighting fitting dimensions 595/595/60 A/B/H[mm]. Mechanical protection degree IP50/IP65. Lighting fitting is serviceable, as the LEDs and drivers of the fitting are replaceable by ZHAGA standard. Manufacturer has valid certificates: ISO 9001:2015, ISO 27001:2013, ISO 14001:2015, ISO 45001:2018, ISO 50001:2011. Lighting fitting type CLEAN ROOM SLIM UP CDP 600/840 HE, manufacturer Buck.