Barn Kooler fans are designed for much better airflow than funnel or basket fans. When placed in the recommended pattern in the barn, the Fans promotes thorough efficient air circulation which lifts and removes ammonia fumes from the floor, reduces summer heat and insect stress, maintains consistence temperature winter and summer and reduces condensation for a dryer, healthier environment. Fans feature heavy duty ball bearing motors which are maintenance-free and energy-efficient. The FS20 draws only 1.9 amps with a 1/3 HP motor. Balanced blades prevent noise and vibration. Barn Kooler fans mount close to the ceiling for more headroom clearance. Mounting brackets, included, allow for upward or downward tilt so the system of fans can be arranged for maximum air flow. FS20 Fan has 20 in. aluminum blades, 115/230 single phase 1/3 HP motor, 1725 RPM, 6000 CFM and weighs 37 lbs. It may be used with variable speed controls.