Recessed luminaire for direct illumination, constructed especially for production plants according to HACCP standards (food and beverage industry), with ambience temperature range -20°C + 45°C. Luminaire efficiency is ensured with highly efficient optical and electronic components. Tempered glass diffuser with special anti-scattering film in case of breakage. Housing is made of steel sheet, 0,8 mm thick, epoxy-polyester powder coated. Fine structured texture. Double anodized aluminium profile holds the optics providing a high mechanical protection degree (IP65). The luminaire is serviceable from above, with access to LED modules and drivers from the suspended ceiling zone, without removing or dismantling the luminaire. Supplied with mounting kit. Total lighting fitting power: 115.0W. 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 80% of initial flux (L80). Initial lighting fitting flux is 15570lm. Lighting fitting efficiency not below 135lm/W. Light color deviation (SDCM) less than 3. Emission degree is UGR < 22. Lighting fitting dimensions 500/500/60 A/B/H[mm]. Mechanical protection degree 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 HB /840 HO, manufacturer Buck.