Recessed mounted LED luminaire with surrounding frame for ceilings with cut-out openings. Direct only light distribution. Luminaire body made of aluminium profile with 100mm track width. 13 different diameters from 600mm to 8000m. Surface silver, white, graphite, black, champagne or copper coated. Further surface options see Lightnet-Surface-Collection or RAL of your choice. Microprismatic screen with optimized glare reduction especially for workplaces. Satin opal diffuser for general lighting with maximum transmittance and homogeneous 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. Height-adjustable set of pendant suspensions for mounting on raw concrete ceiling included.