The Tolsma-Grisnich fans are developed and produced in-house and are unique in its kind. The fans are designed to ensure a long life and a high efficiency.
Next to the normal AC fans , Tolsma also produces the EC fans. These fans realize less than 20% power consumption than the AC series. At 80% ration on speed, the EC fans realize less than 50% power consumption. The sound level is limited to a minimum. The Tolsma air fans are specially developed for storage of potatoes, onions and carrots.