SK enclosure internal fan, 19/18 W, 230 V, 1~, 50/60 Hz, Enclosure internal fan, Complete unit ready for connection with axial fan Snap-on pivot device Fasteners, 230 V, 1~, 50 Hz/60 Hz, 50, 84145915, 1 pc(s), 2.072 lbs, 4028177220485, To prevent hot spots inside the enclosure and facilitate the ventilation of active enclosure climate control components.