Centrifugal fans with rectangular discharge area for installation in industrial and commercial ventilation systems. These fans have a forward centrifugal impeller and double inlet. The impeller is Galvanized sheet and suitable for outdoor conditions. Impeller is connected to the motor with pully and belt. The motors are in two types of single-phase and three-phase and in the form of 6 poles. The fan protection is IP55 and insulation class F. CFDX fan series are designed for utilize in supply of HVAC industry, cooling and air circulation systems.