The BIFA Three Phase 4 Pole 28° 315mm bifurcated case axial fan provides dependable performance for commercial ventilation systems. Available in diameters from 250mm to 1000mm, it features an IP55-protected motor with Class ‘F’ insulation, capable of operating in ambient temperatures up to 200°C. Fan speed can be regulated using a transformer or inverter, as long as the surrounding air temperature does not exceed 60°C. An IP55 terminal box ensures safe electrical connections, and the fan is suitable for environments with relative humidity levels up to 95%. Manufactured to BS EN ISO 9001:2015 and tested according to BS 848 parts 1 and 2 and ISO 5801, it delivers consistent airflow. A 2‑year warranty supports reliable commercial use.