The Canarm BI Series Belt Drive Utility Blower is a heavy-duty commercial and industrial blower available in sizes from 10" to 36". Features non-overloading backward inclined welded wheels, full AMCA Class 1 operation, and discharge position that can be field rotated to any of 8 positions. Aluminum wheel option available for spark resistant construction (AMCA type B). Ideal for general ventilation, industrial processes, and commercial buildings. No motor or drives included — allows flexible motor selection for specific applications.