The BIFA 250mm Three Phase 4 Pole 40° Fan (Stock Ref. BIFA253440) is a durable bifurcated case axial fan developed for demanding commercial and industrial ventilation applications. Suitable for fan diameters from 250mm to 1000mm, it is powered by a Class F insulated motor with IP55 protection for reliable performance. The fan is capable of handling ambient air temperatures up to 200°C and offers speed control via transformer or inverter when operating below 60°C. Fitted with an IP55 terminal box, it also withstands relative humidity levels up to 95% RH. Manufactured to BS EN ISO 9001:2015 standards and tested to BS 848 Parts 1 & 2 and ISO 5801, it ensures proven efficiency and reliability. Supplied with a 2‑year guarantee, this fan is a trusted choice for heavy-duty ventilation environments.