Tornado Box Fans are an extremely popular choice and particularly effective in large growing spaces. Known for being robust, powerful and low in noise output, this is a premium quality fan capable of moving massive volumes of air. Can efficiently move 3250m3 of air per hour. Removes excess humidity and heat while also replacing CO2 Design includes the reliable and powerful Torin Sifan Motor (Manufactured in UK). Includes 5m power cable for easy set up and positioning. Moisture resistant MDF panels to increase box life.