Thanks all. I think CFM is NOT what I'm looking for - which most indor fans use for comparison.
Ddawg, could you recommend a manufacturer or two so I can start my search?
What about a home condenser fan unit? Those seem quiet enough, and put out a nice amount of air with good speed.
Anyone have recommendations on books I can read that explains the differences between things like CFM PSI MPH Velocity and Static Pressure?
I have a project I'm working on that I need forceful air (think leafblower) for a lottery type drawing machine that uses air to circulate ping pong...