The company's unhoused, compact plenum fans are designed to minimize AHU first cost by maximizing application flexibility with capacities to 160,000 cfm, pressures to 12 in. w.g., and 19 sizes to 73 in. Double-width fans are suited for conventional designs with capacities to 350,000 cfm, pressures to 14 in. w.g., and efficiencies beyond 85%. Both fan lines use airfoil wheels.