Centrifugal forward fan single inlet with airflow of (10,200-21,355) m³/hr, with rectangular discharge area for installation in supply of industrial and commercial ventilation systems. The advantage of these types of fans are good efficiency in high air flow rate at low differential pressure and low noise and sound level. The material of impeller is Galvanized sheet. Impeller is connected to the motor directly without pully and belt. Motors are three phases with 4 or 6 poles. CFS fan series are designed for utilizing in supply of HVAC industry, cooling, smoke management, and air circulation systems.