The BIFA Three Phase 4 Pole 28-degree 900mm bifurcated axial fan delivers reliable commercial ventilation performance. Suitable for diameters ranging from 250mm to 1000mm, it features a motor with IP55 protection and Class ‘F’ insulation, capable of operating in ambient temperatures up to 200°C. Fan speed can be adjusted via transformer or inverter when ambient air temperatures are below 60°C. The IP55 terminal box ensures compatibility with environments of up to 95% relative humidity. Manufactured to BS EN ISO 9001:2015 standards and performance-tested to BS 848 parts 1,2 and ISO 5801, this fan is backed by a 2‑year guarantee for dependable operation.