The Maxkold YWF6E-450 is a 6-pole (low speed) single-phase external-rotor axial fan for refrigeration condensing units where reduced noise is required. 450mm blade diameter, 230V/1Ph/50Hz, 6-pole approximately 920rpm, sucker airflow direction. IP54 protection, Class F insulation. Reduced rotational speed gives quieter operation suited to noise-sensitive installations.