Purpose-built to provide maximum airflow in even the toughest conditions, Powerfoil X4 raises the bar on comfort, safety, and quality for industrial fans. This HVLS fan is the reigning champion of airflow and provides the lowest total cost of ownership in the universe. Powerfoil X4 has the industry-leading airflow, safety, and performance needed to transform harsh industrial environments into comfortable working conditions. Engineered to improve indoor air quality and occupant comfort far longer than other fan alternatives with a 15-year full parts warranty.