The 10" in-line axial fan has been designed to be used as a stand alone fan or it can be attached in series to run long lengths of ventilation duct. Intake and exhaust flanges allow for either 8" or 10" duct to be attached to either end of the blower to achieve positive or negative ventilation. The blower is light weight and weighs less than thirty pounds; it is available in standard electric or explosion-proof electric.