Recessed mounted LED luminaire for frameless installation in plasterboard ceilings. Direct only light distribution. Luminaire body made of aluminium. Surface white. Microprismatic screen with optimized glare reduction especially for workplaces. Satin opal diffuser for general lighting. Converter integrated into luminaire housing, optionally switchable or dimmable (1-10V, DALI, Touch-Dim, Casambi). Colour temperatures 2200K, 2700K, 3000K, 3500K, 4000K or 6500K. Binning initial ≤ MacAdam 3. Colour rendering CRI>80 or CRI>90. Mounting brackets included.