The BIFA Single Phase 4 Pole 32° 400mm bifurcated case axial fan is designed for efficient commercial ventilation. It is available in sizes from 250mm to 1000mm and features an IP55-protected motor with Class ‘F’ insulation, suitable for maximum ambient temperatures of 200°C. Speed can be controlled via transformer or inverter when ambient air temperature does not exceed 60°C. The fan includes an IP55 terminal box and can operate in relative humidity levels up to 95%. Manufactured to BS EN ISO 9001:2015 and performance-tested to BS 848 parts 1,2 and ISO 5801, it comes with a 2‑year guarantee for reliable performance.