The BIFA Three Phase 2 Pole 18° 400mm bifurcated case axial fan is engineered for efficient and robust performance in commercial ventilation systems. Covering a size range from 250mm to 1000mm, this model is equipped with an IP55-rated motor featuring Class ‘F’ insulation, ensuring reliable operation in environments with maximum ambient temperatures up to 200°C. Speed control is available via transformer or inverter when the surrounding air temperature does not exceed 60°C. The fan includes an IP55 terminal box and is capable of operating in conditions with relative humidity up to 95%. Manufactured to BS EN ISO 9001:2015 standards and performance tested to BS 848 parts 1,2 and ISO 5801, this unit combines quality and reliability. Backed by a 2‑year guarantee, the BIFA 403218 is a dependable solution for demanding commercial applications.