What are you trying to do?
how are you using the space?
Big *** fans work really well but they are big bucks
Ceiling fans and Industrial HVLS fans engineered for powerful airflow, quiet performance, and year‑round comfort in any space. Shop Big *** Fans.
bigassfans.com
I bought 7ft dia. Fans and they move some air, I have 3 in a 26x36 - 10 ft tall about 9360 cubic ft, mine were $300 each all metal.
Also have 5tons if AC and the fans move the cool AC around.