Rotor matrix is consist of hub, bearings and foil. The rotor matrix is made for laminar airflow using alternating layers of flat and corrugated foil to provide a structure comprising small, triangular channels. The rotors are either one piece or sectorized. Sectorized rotors are divided into segments that are assembled when the rotor is installed. One piece rotors are made in diameters between Ø300–2450 mm, while sectorized rotors have diameters of Ø600-5000 mm. All rotors are made mechanically stable by internal spokes screwed into a hub and welded around the periphery. This design allows cleaning with compressed air, steam, hot water or special cleaning agents. Temperature range -20°C to +70°C.