DIRECT DRIVEN EXHAUST FAN - EWD 37 - 17400M�/HDiffuseAir efficiently mixes the air in your grow room, giving you total control over the climate. Designed and manufactured by Systemair, DiffuseAir effectively eliminates microclimates, high humidity zones, and hot spots, as well as preventing harsh air streams that can cause wind burn to your plants and salt buildup in growing media. The unit mounts to the ceiling, freeing up valuable floor space for cultivation. Aerodynamic efficiency: With its