The BIFA Three Phase 4 Pole 18° 315mm bifurcated case axial fan is engineered for efficient and dependable commercial ventilation. It is available in diameters from 250mm to 1000mm and features an IP55-rated motor with Class ‘F’ insulation, suitable for ambient temperatures up to 200°C. Fan speed can be controlled using a transformer or inverter when the surrounding air temperature does not exceed 60°C. The fan includes an IP55 terminal box for secure electrical connections and can operate in environments with relative humidity up to 95%. Built to BS EN ISO 9001:2015 standards and tested to BS 848 parts 1 and 2 as well as ISO 5801, this model ensures reliable airflow. A 2‑year guarantee provides added confidence for commercial installations.