LED recessed luminaire with decorative opal PMMA diffuser. Can be universally used in cut-out recess openings and in system ceilings with concealed or exposed grids. System dimension 625 mm x 625 mm. Cut-out opening 580 mm x 580 mm. Opal PMMA diffuser with structured surface, projecting on room side for decorative ceiling illumination, for increased lighting comfort. Cover is height-adjustable in 2 positions.