Low-pressure industrial axial fans for direct extraction to the outside. Suitable for vertical mount only. Speed regulated by optional speed controller. All units have IP44 protection. Circular metal protection grille with black epoxy-polyester paint finish which can be easily removed for cleaning and maintenance. W min/max: 55 - 70. A min/max 0.33 - 0.40. RPM: 1400. Airflow m3/h 1360 Decibels at 3m: 54 Blade diameter: 308mm