Kitchen extraction fans in accordance with current VDI guidelines, with Disc Rotor Motors/EC Disc Rotor Motors that are separated from the airflow, are always deployed where high flow volumes and simple maintenance/cleaning is wanted. The stable aluminium frame construction with 40-mm insulation, together with the FISCHBACH® Disc Rotor Motor/EC Disc Rotor Motor, achieve high efficiency levels and also a very low sound level.