The Vevor air circulation fan is designed to deliver powerful ventilation for greenhouses, patios, garages, livestock shelters, and similar spaces. Its 12" fan provides up to 1800 CFM airflow with 10 speed levels and three operating modes for flexible control. Auto mode can respond to temperature and humidity settings, while timer cycle mode supports scheduled air exchange. An LCD display and external probe help monitor conditions for more precise operation. The metal frame and aluminum alloy blades are built for dependable use in hot, humid, and dusty environments.