A shutter exhaust fan designed to exchange air in large spaces, improving ventilation in workspaces like warehouses, greenhouses, garages, and workshops. By installing this exhaust fan, you can refresh your workspace and regulate heat, moisture, and odor levels to improve comfort. It is run by a PWM-controlled EC motor that is energy-efficient while enabling precise fan speed control to generate your ideal ventilation level. This control is powered by a speed controller that enables up to 10 fan speed levels. Its heavy-duty build features aluminum fan blades, steel wire guards, and lightweight steel shutters. This product is a part of the UIS™ platform of grow devices and smart controllers, designed to integrate with each other to achieve your ideal environment.