The BIFA 250mm Three Phase 4 Pole 25° Fan (Stock Ref. BIFA253425) is a robust bifurcated case axial fan designed for demanding commercial ventilation systems. Suitable for fan sizes from 250mm to 1000mm, it is built with Class F motor insulation and an IP55-rated terminal box for reliable operation in harsh conditions. The fan can withstand ambient temperatures up to 200°C and is speed controllable via transformer or inverter when air temperatures are below 60°C. Capable of operating in environments with up to 95% relative humidity, it is manufactured to BS EN ISO 9001:2015 standards and performance tested to BS 848 Parts 1 & 2 and ISO 5801. Backed by a 2‑year guarantee, this fan offers reliable, high-quality airflow for industrial and commercial applications.