Versa-Kool's deep-guard circulation fans are unrivaled in the industry, expertly engineered to produce greater air movement and superior cooling with less noise. Look no further for the best way to reduce heat stress and improve air quality. Reduce heat stress and improve air quality with Schaefer's uniquely designed circulation fans. You don't hear them. You don't see them. You only feel them. Also known as horizontal air flow (HAF) fans, these fans move air in a coherent horizontal pattern creating a gentle 'racetrack' airflow pattern needed in greenhouses to maximize heat distribution and humidity control by mixing the air, from ceiling to floor. Schaefer Versa-Kool® Air Circulator Fan, 1-Phase Fixed High Velocity, 7860 cfm, 1750 RPM Speed, 1/2 HP Power, 115/230 VAC, 4.8/2.4 A, 50/60 Hz Frequency, 1 Speed, 3 Blades, Direct Drive Control, Aluminum Blade, Deep Guard, Powder Coated Steel Housing Material, Ceiling Mounting, 5 ft Cord, 24 in Dia Dimensions, Domestic