Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Unique fan, quite loud

I purchased this fan because I have an 18.5" square window. Amazon's description says this is for 18" windows. Unfortunately, the box states it is for 19"x20" windows. This is no really Lasko's fault, however. The main issue with this fan is it is annoyingly loud -- even on the lowest speed. Not quite as loud as my portable air conditioner, but close to it. If you plan on spending much time within 12' of this fan, I suggest you look else where. That being said, it does move a lot of air and if you are looking for a window fan for an unused portion of the house, then this may be ideal for you.