The BIFA Single Phase 4 Pole 16° 400mm bifurcated case axial fan is engineered for reliable commercial ventilation. Available in diameters from 250mm to 1000mm, it features an IP55-protected motor with Class ‘F’ insulation, capable of withstanding ambient temperatures up to 200°C. Speed can be controlled via transformer or inverter, provided the air temperature does not exceed 60°C. Equipped with an IP55 terminal box and suitable for up to 95% relative humidity, this fan meets BS EN ISO 9001:2015 quality standards and has been tested to BS 848 parts 1,2 and ISO 5801. With a 2‑year guarantee, it ensures durable and efficient operation for demanding commercial applications.