The BIFA Three Phase 4 Pole 22-degree 500mm axial fan is designed for commercial ventilation applications. It is available in diameters from 250mm to 1000mm and features motors with IP55 protection and Class ‘F’ insulation, ensuring reliable and long-lasting operation. The fan supports ambient temperatures up to 200°C, with speed controllable via transformer or inverter when the air temperature does not exceed 60°C. Equipped with an IP55-rated terminal box, it is suitable for environments with relative humidity levels up to 95%. Manufactured to BS EN ISO 9001:2015 standards, its performance has been tested according to BS 848 parts 1 and 2 and ISO 5801. The BIFA503422 model comes with a 2‑year guarantee, offering dependable and efficient commercial ventilation.