A greenhouse fan not only provides the ventilation but also the correct air circulation in your greenhouse. Heat and humidity must be evenly distributed in the greenhouse so that your plants can dry off optimally. Above all, cacti, orchids and other tropical plants depend on the simulation of air movement to which they are accustomed in their natural habitats. Some plants, such as tomatoes, also require air circulation for fertilization. A greenhouse fan also protects your plants from pest and fungal attacks. Our greenhouse fan "Arizona" achieves a high fan performance of 460m3 and is still very quiet. The stainless steel housing is attached to the ceiling so that the greenhouse fan can be used to save space. Made in Germany. 3 year warranty.