The BIFA 250mm Single Phase 4 Pole 25° Fan (Stock Ref. BIFA251425) is a bifurcated case axial fan suitable for fan sizes from 250mm to 1000mm. It comes with a Class F motor insulation and IP55 protection, capable of operating in ambient temperatures up to 200°C. The fan’s speed is controllable via transformer or inverter when ambient temperatures do not exceed 60°C. Designed for relative humidity levels up to 95%, it is manufactured to BS EN ISO 9001:2015 and tested to BS 848 Parts 1 & 2 and ISO 5801 standards. Backed by a 2‑year guarantee, this fan ensures reliable performance in commercial ventilation applications.