I got this one from good old Amazon. We open our frameless window, which barely lets in any air, and place the fan on top of the couch back. It pulls in a lot of air and you can definitely feel the breeze.
If your power outlet is far away you can get an extension cord, once again, from Amazon.
Retired electronic technician (45 years in the field)
2017 Greyhawk 29W
solar & many other mods
wife (maybe I should have given her top billing)