The BIFA Three Phase 4 Pole 12-degree 500mm axial fan is designed for commercial ventilation systems. Available in diameters from 250mm to 1000mm, it features motors with IP55 protection and Class ‘F’ insulation for reliable and long-lasting performance. The fan can operate in ambient temperatures up to 200°C, with speed adjustable via transformer or inverter when the air temperature does not exceed 60°C. It is fitted with an IP55-rated terminal box and is suitable for environments with relative humidity up to 95%. Manufactured according to BS EN ISO 9001:2015 standards, the fan’s performance has been tested to BS 848 parts 1 and 2 as well as ISO 5801. The BIFA503412 model comes with a 2‑year guarantee, ensuring consistent and efficient commercial ventilation.