Ventilate even the largest areas with the Dri-Eaz Vortex Axial Fan (F174). Powerful enough to drive air through 125 ft. of ducting or more, the Vortex can be used to ventilate work areas during remodels, new construction, or cleaning. Featuring 12 in. duct rings on both sides of the fan, the Vortex can pull musty, stale air out or draw fresh air in. Or use it to dry large areas like gyms, hallways, manufacturing environments, and more.