The BIFA Single Phase 4 Pole 16° 315mm fan is part of the BIFA bifurcated case axial fan series, built for commercial ventilation applications. It is available in diameters from 250mm to 1000mm and includes motors with IP55 protection and Class ‘F’ insulation, allowing operation in ambient temperatures up to 200°C. Fan speed can be adjusted via a transformer or inverter when the ambient air temperature does not exceed 60°C. The fan features an IP55-rated terminal box and is suitable for environments with relative humidity levels up to 95%. Manufactured in accordance with BS EN ISO 9001:2015, its performance is tested to BS 848 parts 1 and 2 and ISO 5801 standards. The unit is supplied with a 2‑year guarantee.