Instruct: Classify Amazon reviews into positive or negative sentiment
Query: not commercial grade

It is a fan, it moves air, it is reasonably quiet. There is nothing commercial grade about it. It is also not worth the $70.00 price I paid. This fan makes me feel like a sucker. It is my fault for not reading the the reviews. I assumed 5 stars meant everything was perfect. When something isn't as advertised, it shouldn't be given 5 stars. this fan is 90% plastic. Hopefully it is the motor that is what I paid for. This fan appears to be more of a $20-$30 fan.I would pick a different fan for less money. It works, but it's not commercial grade. I'm going to try it for a few days, but I will probably return it for a fan of the same quality, but for $40 dollars less.