The Vortex Axial Fan is our most powerful axial airmover. Use the Vortex to drive air through 125 ft. (38 m) or more of ducting to ventilate areas during remodels, new construction, manufacturing or flood restoration. Featuring 12 in. (30 cm) duct rings on both sides, the Vortex can be used to pull musty, stale air out or draw fresh air in. Or use it to dry large areas like gyms, crawlspaces, storage facilities and more.