Sheet steel housing suitable for ceilings with visible T-rails, concealed symmetrical rail constructions and cut-out ceilings, protection class refers to visible luminaire surface, clean rooms and clean room areas according to DIN 14644-1, simultaneously IPA certified luminaire, tested for clean room systems according to ISO CLASS 1 as well as chemical and biological resistance at individual component level, light distribution direct beam using micro-prism panel made of acrylic glass with natural anodized aluminum frame, light color neutral white (840) with very good color consistency and high color rendering Ra>80, for computer workstations, 65° < 3000 cd/m² all-round glare protection according to the current standard DIN-EN 12464-1, electrical connection via 3-pin connection terminal with plug contact technology.