These durable and aesthetically pleasing fans feature a high airflow with a wide airflow pattern, which reduces the number of fans needed for complete coverage. Reduce heat stress and improve air quality with Schaefer's uniquely designed circulation fans. Unrivaled in the market, these fans are engineered to produce greater air movement and superior cooling no matter the application. 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, 11400 cfm, 825 RPM Speed, 1/2 HP Power, 115/230 VAC, 7/3.5 A, 60 Hz Frequency, 1 Speed, 3 Blades, Direct Drive Control, Galvanized Steel Blade, Deep Guard, Polyethylene/Powder Coated Steel Housing Material, Ceiling Mounting, 36 in Dia Dimensions, Domestic