SMART-SN fans have been engineered for general ventilation of buildings for conveying the dry air of maximum temperature +60ºC and dustiness not exceeding 0,3 g/ m³, without viscous impurities, aggressive compounds and without substances creating explosion hazard. SMART-SN family of fans, as a series of eight sizes, of motor rates ranging from 0,37 kW up to 5,5 kW provide maximum flow efficiency 36 000 m3/h. The appliances meet the requirements of the ErP 2009/125/EC Directive.