The BIFA Three Phase 4 Pole 16-degree 630mm bifurcated axial fan is engineered to deliver reliable airflow for demanding commercial ventilation applications. Available in diameters from 250mm to 1000mm, it features an IP55-rated motor with Class ‘F’ insulation, ensuring durability and operational safety. Designed to withstand maximum ambient temperatures up to 200°C, the fan also supports speed control via transformer or inverter when the surrounding air temperature does not exceed 60°C. Its IP55 terminal box provides enhanced electrical protection, while suitability for up to 95% relative humidity ensures dependable operation in challenging environments. Manufactured under BS EN ISO 9001:2015 quality standards and performance tested to BS 848 parts 1 and 2 as well as ISO 5801, the BIFA633416 delivers consistent efficiency and long service life. With a 2‑year guarantee, it is an excellent choice for commercial ventilation systems.