The SDS is a linear slot diffuser perfectly suited for usage in cases with high penetration depths or for shielding sensitive areas. The diffuser is applicable for concentrated jets with a high flow rate at very low sound power levels. The saddle-nozzle slot diffuser SDS consists of saddle-nozzles rotatably mounted in extruded aluminium profiles and can be delivered in any length. The diffuser can be used single- and multiple-rowed for supply and exhaust air and is especially well suited for constant and variable volume systems in big rooms in the industrial and comfort sector for blanketing entrance areas.