The Mixed Flow Roof Fan Three Phase 4 Pole 450mm (Stock Ref: RMH45034B) is a reliable and efficient solution for commercial ventilation systems. Equipped with an IP44-rated motor and Class ‘B’ insulation, it is designed for continuous operation in environments up to 40˚C. The fan includes standard thermal overload protection, an IP65 service isolator, and a fitted guard for added safety. All models are fully speed controllable, allowing flexible airflow management. Independently tested to BS 848 parts 1 & 2 and produced under BS EN ISO 9001:2015 quality standards, this roof fan ensures dependable performance and durability. Supplied with a 2‑year guarantee, it is ideal for demanding commercial applications.