The BIFA 250mm Single Phase 4 Pole 40° Fan (Stock Ref. BIFA251440) is a high-performance bifurcated case axial fan suitable for fan sizes ranging from 250mm to 1000mm. It features Class F motor insulation and IP55 protection, allowing operation in ambient temperatures up to 200°C. The fan speed is adjustable via transformer or inverter when the surrounding air temperature does not exceed 60°C. Engineered for relative humidity levels up to 95%, it is manufactured to BS EN ISO 9001:2015 standards and performance tested to BS 848 Parts 1 & 2 and ISO 5801. Comes with a 2‑year guarantee for reliable commercial ventilation performance.