The BIFA Single Phase 2 Pole 18° 400mm bifurcated case axial fan is engineered for reliable commercial ventilation. Available in sizes from 250mm to 1000mm, it features an IP55-rated motor with Class ‘F’ insulation, suitable for maximum ambient temperatures of 200°C. Fan speed can be controlled using a transformer or inverter when ambient air temperature is below 60°C. Equipped with an IP55 terminal box, the fan can operate in environments with up to 95% relative humidity. Manufactured to BS EN ISO 9001:2015 and performance tested to BS 848 parts 1,2 and ISO 5801, this unit comes with a 2‑year guarantee for dependable, long-term operation.