Dayton heavy-duty direct-drive radial blade blowers are used for cooling & moving high pressure & volume air in industries such as aviation, automotive, chemical & clothing. These radial blade blowers feature flat blades arranged in radial fashion to convey air efficiently and offer long term service. Dayton direct drive blowers are offered either with drip-proof motors or without motors, in blower speeds ranging from 1725 to 3475 rpm. These radial blade blowers also feature self-cleaning & die-cast wheels that are precision balanced for high performance. The wheel diameters range from 7-3/4 to 13-1/2 inches.