I use this one: https://www.menards.com/main/heating-cooling/portable-fans/lasko-reg-cyclone-reg-20-floor-fan/3520/p-1444437509585.htm
https://www.amazon.com/Lasko-3520-Cyclone-Pivoting-Floor/dp/B00JJHYPE2/ref=sr_1_1?dchild=1&keywords=lasko+cyclone&qid=1600051121&s=home-garden&sr=1-1
Amazon link if you don't have a menards by you.