The BIFA Three Phase 4 Pole 40-degree 630mm bifurcated axial fan is engineered for high-performance air movement in commercial ventilation applications. Available in sizes ranging from 250mm to 1000mm, this fan is built with an IP55-protected motor featuring Class ‘F’ insulation for dependable durability and safe operation. It is suitable for use in environments with ambient temperatures up to 200°C and can be speed-controlled via transformer or inverter where the air temperature does not exceed 60°C. The fan includes an IP55-rated terminal box and is designed to handle relative humidity levels of up to 95% RH. Manufactured under BS EN ISO 9001:2015 standards and performance tested to BS 848 parts 1 and 2, as well as ISO 5801, the BIFA633440 offers assured quality and efficiency. Backed by a 2‑year guarantee, this model is an ideal solution for demanding commercial ventilation systems.