The BIFA Three Phase 4 Pole 28-degree 560mm axial fan is designed for reliable commercial ventilation. Offered in sizes from 250mm to 1000mm, it incorporates motors with IP55 protection and Class ‘F’ insulation, providing durable and consistent performance. The fan can operate in ambient temperatures up to 200°C, with speed controllable via transformer or inverter when the surrounding air temperature does not exceed 60°C. It features an IP55-rated terminal box and is suitable for environments with relative humidity up to 95%. Manufactured according to BS EN ISO 9001:2015, the fan has been performance tested to BS 848 parts 1 and 2 and ISO 5801. The BIFA563428 model includes a 2‑year guarantee, ensuring efficient and dependable commercial ventilation.