The BIFA Three Phase 4 Pole 24-degree 630mm bifurcated axial fan is a high-performance unit built for demanding commercial ventilation applications. Offered in diameters from 250mm to 1000mm, it features an IP55-protected motor with Class ‘F’ insulation to ensure long-lasting reliability. Designed to handle ambient temperatures up to 200°C, the fan also supports speed control via transformer or inverter, provided the surrounding air temperature does not exceed 60°C. An IP55-rated terminal box provides added durability and protection in harsh environments. This fan is suitable for use in conditions with relative humidity levels up to 95% RH, making it versatile for a range of applications. Manufactured under BS EN ISO 9001:2015 quality standards and performance tested to BS 848 parts 1 and 2 along with ISO 5801, the BIFA633424 guarantees dependable operation and tested efficiency. With a 2‑year guarantee, it offers a robust and trusted choice for commercial ventilation systems.