The BIFA Three Phase 4 Pole 36-degree 630mm bifurcated axial fan is engineered for dependable performance in demanding commercial ventilation systems. Available in sizes ranging from 250mm to 1000mm, it incorporates an IP55-protected motor with Class ‘F’ insulation for long-lasting durability. Designed to operate in ambient temperatures up to 200°C, the fan also supports speed control through a transformer or inverter when air temperatures remain below 60°C. An IP55 terminal box ensures secure electrical connections, while the fan is capable of functioning in environments with relative humidity up to 95% RH. Built in line with BS EN ISO 9001:2015 standards and performance tested to BS 848 parts 1 and 2 as well as ISO 5801, the BIFA633436 provides assured quality and efficiency. Supplied with a 2‑year guarantee, it is a robust solution for commercial ventilation requirements.