The BigDog circulation fan from Schaefer Ventilation offers factory and warehouse ventilation and cooling. This 72" diameter, 3 hp, belt drive, fiberglass variable-speed circulation fan can be ceiling- or post mounted, and is fitted with six fully adjustable air deflectors to allow aiming the airstream wherever it is needed. Schaefer's BigDog moves more than 60,000 cfm of air at less than 25 cfm/watt to create a breeze over an area 200' long and 35' wide. Additional cooling available with optional mist kits.