The BIFA Single Phase 4 Pole 22° 315mm fan is part of the BIFA bifurcated case axial fan series, designed for commercial ventilation systems. It is offered in diameters from 250mm to 1000mm and incorporates motors with IP55 protection and Class ‘F’ insulation, suitable for ambient temperatures up to 200°C. Fan speed can be controlled via a transformer or inverter when the surrounding air temperature does not exceed 60°C. The fan features an IP55-rated terminal box and is compatible with relative humidity levels 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 unit is supplied with a 2‑year guarantee.