Roof fans have been placed in a separate category due to their aesthetic and physical properties. A suitable model of roof fan can add to the character of the building when it is in view. Yet the air and gasses to be removed often cause extra demands to be made in the field of temperature, vapour and corrosion. The roof fans in the program below are made from durable material and are maintenance-free. The extremely attractive designs can also be ordered with special configurations such as an explosion-free motor, in various types of materials and with a wider temperature range for the medium.