Hi Tom,
I bought mine used from eBay. It is a Dayton 4C108 Blower radial high pressure 10 5/8 wheel diameter. I cueerntly have a 3/4 hp motor at 1700 rpm. I am almost ready for a test boil and can't wait to see how it does. I am using 2" pipe with 3/8" nozzles.
Wayne