Smallest Inline Fan

I just had an email exchange with a tech from S&P. He said the best way to control the speed of these or any fan of similar design is to use this speed controller:

https://www.amazon.com/Fantech-WC-15-Control-Switch/dp/B000X4PMRY

"..5 amp, solid state controller.."

Now the trick, for the electrically disinclined is how to wire the thing I could always pay a guy lol.

I've been doing a little more research and found this one through Home Depot of all places..

http://vents-us.com/item/5117/TT_PRO_100/#parameters

It's essentially the same as an S&P, except with more options. I've had an email exchange with them too and same story as the S&P as far as speed control is concerned. The nice thing is the fan is prewired and there is a "high/low" switch installed from the factory. Reviews look good as far as I can see.

EDIT: The guy just called me. He's been working with growers and hydro shops in San Francisco putting together a line of fans for our applications. I think it's the best selection I've seen...