An aluminium linear LED luminaires with an opal diffuser and a unique design. The SANT luminaires has an excellent performance, the embedded LED light sources achieve the operational efficiency of up to 150lm/W. Due to the angled diffuser, the light gets refracted down as well as back up onto the ceiling. The luminaires can be dimmable with direct-indirect lighting and the possibility of tunable white LED temperature as currently needed (2700K – 6500K). SANT is an ideal solution when low power consumption, high efficiency and attractive design are required. SANT may be used as a single standing or as a continuous lighting system.