Vostermans Ventilation developed recirculation fans with a wide inlet radius. These Multifans have a very efficient performance and move a large volume of air for their compact size. The hanging fan is nearly all white by design and assembled to take advantage of the rifling effect of the venture, which provides a tighter air flow pattern than a standard recirculation fan. It has been designed specifically to stir air evenly across large open bays. Available with either a 50 or 60 Hz motor.