Continental Fan’s UDVL Upblast Roof Ventilators provide aerodynamically efficient performance and a low silhouette design. These rugged, high quality ventilators are constructed with a heavy duty welded steel base, galvanized butterfly damper section and a spark resistant cast aluminum airfoil axial impeller. The UDVL ventilator requires no belts or pulleys, and is ideal where little or no maintenance is required. This aerodynamically efficient fan is available in diameters from 18″ through 60″, with capacities ranging… Read More