The BIFA Single Phase 4 Pole 24° 400mm bifurcated case axial fan is ideal for commercial ventilation systems. Available in diameters ranging from 250mm to 1000mm, it features an IP55-protected motor with Class ‘F’ insulation, supporting operation at ambient temperatures up to 200°C. The fan speed is controllable via transformer or inverter when the air temperature does not exceed 60°C. Equipped with an IP55 terminal box, it can handle relative humidity levels up to 95%. Manufactured under BS EN ISO 9001:2015 and performance-tested to BS 848 parts 1,2 and ISO 5801, this fan ensures dependable airflow and comes with a 2‑year guarantee.