I have a few of these. They are used to blow smoke from a structure. You place this 6 feet from a door and it blows so much air it will blow all the smoke out. This is not some fan to sit in front of with your mint julip. This is huge CFM... LITTERALLY 20,000 CFM! Want fresh air in your barn... 20,000 CFM!

From their web site:

Part No .Model No. Dia. HP CFM Dimensions (W” x D” x H”) Weight Options

910-1140DD-21-H-5.5 21″ 5.5 20,152 25.00″ x 21.00″ x 26.25″ 90 lbs. Honda

We use them to keep work trailes cool and free of fumes. These are used but cared for by a fire department. One fellow bought one to tend a fire. The CFM burned off the trees he was getting rid of, which was not happening with natures wind. Most have Honda 5.5 HP motors, some have Tecumseh 5.5 motors. These either work or there is a fixable glitch. One had a rub in the fan which took 5 minutes to fix. Choose the best for you.

This is the lowest price I have seen these for

It is best to TEXT Mark @ 435-640-0283. If you call, you might get auto-blocked, so please text. These are on 2300 south in WVC