Linear recessed ceiling and wall luminaire for aesthetically sophisticated lighting. The luminaire features three LED light units. The housing is made of extruded aluminum profile and is powder-coated, with an aluminum end cap that is also powder-coated. The LED light unit utilizes MRS technology, which includes a mini-reflector system made of metallized 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 wide beam light distribution. It is designed for ceiling installation with a pre-assembled SBS mounting system. The LED unit includes an integrated converter that is interchangeable and removable, and it is suitable for through-wiring.