The BIFA Single Phase 4 Pole 20° 315mm fan is part of the BIFA bifurcated case axial fan series, designed for commercial ventilation applications. It is available in diameters ranging from 250mm to 1000mm and features motors with IP55 protection and Class ‘F’ insulation, supporting operation in ambient temperatures up to 200°C. Fan speed can be adjusted via a transformer or inverter when the ambient air temperature is 60°C or below. The unit includes an IP55-rated terminal box and is suitable for environments with relative humidity up to 95%. Manufactured according to BS EN ISO 9001:2015, its performance is tested to BS 848 parts 1 and 2 and ISO 5801 standards. The fan comes with a 2‑year guarantee.