Duct axial flow fans are specialized devices designed to move air efficiently through ductwork systems. Unlike centrifugal fans, they operate by drawing air directly through the fan blades and expelling it in the same direction, making them ideal for applications requiring high airflow rates at low pressures. These fans are commonly employed in ventilation systems for buildings, industrial processes, and HVAC (Heating, Ventilation, and Air Conditioning) systems. With their compact design and ability to generate significant airflow while maintaining relatively low noise levels, duct axial flow fans offer an effective solution for maintaining optimal air circulation and ventilation in various settings, ensuring comfort and safety.