The BIFA Three Phase 4 Pole 16-degree 500mm axial fan is built for commercial ventilation applications. Available in diameters from 250mm to 1000mm, it features IP55-protected motors with Class ‘F’ insulation, providing reliable and long-lasting operation. The fan can handle ambient temperatures up to 200°C, with speed adjustable via transformer or inverter when the surrounding air temperature does not exceed 60°C. It includes an IP55-rated terminal box and is suitable for relative humidity levels up to 95%. Manufactured in accordance with BS EN ISO 9001:2015, the fan’s performance has been tested to BS 848 parts 1 and 2 and ISO 5801 standards. The BIFA503416 model comes with a 2‑year guarantee, ensuring dependable and efficient commercial ventilation performance.