Vortex 12" Powerfan Inline Fan, 1124 CFMVortex Powerfans are high performance inline duct blowers constructed from quality steel with heavy duty attractive hammertone powdered coat finish. The extended collar allows for easy duct installation and taping. Superior quality and smart design ensure vibration free operation with balanced motorized impellers with permanently lubricated ball bearings. Include 6' power cords, and galvanized mounting brackets allowing both horizontal and vertical