The BIFA 250mm Single Phase 4 Pole 35° Fan (Stock Ref. BIFA251435) is a robust bifurcated case axial fan designed for fan sizes ranging from 250mm to 1000mm. It incorporates Class F motor insulation and IP55 protection, enabling operation in ambient temperatures up to 200°C. The fan’s speed is controllable via transformer or inverter when the ambient temperature does not exceed 60°C. Suitable for relative humidity levels up to 95%, this fan is manufactured to BS EN ISO 9001:2015 standards and tested to BS 848 Parts 1 & 2 and ISO 5801 for reliable performance. A 2‑year guarantee ensures long-lasting operation in commercial ventilation applications.