Saran exhaust fans are suitable for installing in residential, office and industrial areas. In this type of ventilators, air comes from one side and is blown out from the output (valve). The air flow rate of Saran exhaust fans is between 500 CFM to 21500 CFM in different pressure drops. The body of exhaust fans is made of warm galvanized sheets in suitable thickness and their shafts are from carbon steel (ek45) or from stainless steel. The ball bearings used in exhaust fans, are provided from the most valid producers of ball bearing in the world. The fans used in exhaust fans are from Forward and Backward type, which are produced either by Saran Company or other valid foreign manufacturers.