The PF-4-390-500-30B-3P is a three phase (400V 50Hz) blower 4 Pole (1300rpm) plate mounted 350mm axial fan. Mounted with 4 mountings on wall plate (615mm Mtg Ctrs) and supplied with terminal box. A fan assembly offering superb build quality by Remco. The PF-4-390-500-30B-3P is a three phase (400V 50Hz) blower 4 Pole (1300rpm) plate mounted 350mm axial fan. Mounted with 4 mountings on wall plate (615mm Mtg Ctrs) and supplied with terminal box. A fan assembly offering superb build quality by Remco.