Linear recessed ceiling and wall luminaire for aesthetically sophisticated lighting. The luminaire features two LED light units. The housing is made of extruded aluminium profile, powder-coated, with an end cap that is also aluminium and powder-coated. The LED light unit utilizes MRS technology, which includes a mini-reflector system made of metallised thermoplastic with a prismatic black glare-suppressing frame for pleasant glare-free light (RUG < 10). Each LED light unit contains seven reflector elements and provides narrow beam light distribution. It is designed for ceiling installation with a pre-assembled SBS mounting system. The LED unit has an integrated converter that is interchangeable and removable, and it is suitable for through-wiring.