Review on Optimus F-4092: Ultra-Durable 9-Inch Industrial-Grade Fan- Silver Coated, 2-Speed - Buy 1-Pack Now! by Samantha Stevens

Terrible! I have replaced this fan 3 times in 60 days! The first fans and not even the last 48 hours. The second one sent as a replacement stopped working as soon as I turned it off. I left it on and plugged it in and after about 30 minutes it miraculously started spinning very slowly. I figured it would last a long time because it's industrial grade. But this fan from this company - POS! I contacted Revain and it was for a refund. Now I'm stuck with a fan that I can't turn on and off. Lesson learned!