This line of belt-driven utility fans has been expanded to include the Series 100. The new series offers nine fan sizes that are constructed of galvanized steel and utilize a backwardly inclined aluminum wheel. Features include an adjustable motor plate, corrosion-resistant fasteners, and slip fit outlet. The fans supply performance capabilities of up to 23,000 cfm and up to 2.5 in. wg. The wheel design results in higher efficiencies and a non-overloading horsepower curve. The fans are suitable for indoor or outdoor installations.