Instruct: Classify Amazon reviews into positive or negative sentiment
Query: excellent fan

I received the fan actually before the estimated time and it was in perfect working order. For a fan this size it's really pretty quiet even on the highest speed. The amount of air it moves is impressive and it easily surpasses the old 16 inch fan that it replaced. I don't like how the fan locks in to it's vertical adjustment, it drops out of position very easily if you jostle it but it's not an issue when it is in use. This is the second Lasko I've bought, the other being a window fan, and both are excellent. This fan is definitely worth the money.