aRok fan is mounted in the walls. Used in utility rooms and industrial spaces. In contrast to aRos fan, its housing is square and both fans are available in diameters range 200-800 mm. The fans have got single-phase asynchronous motor with ball bearing.
This engine is secured by thermal fuse. There is a possibility to use the spin controller to optimize the work of an engine. Both fans are made of powder-coated steel plate.