This fan is a great size and outdoor rated for our screened in porch. It moves a lot of air. But, on the negative side, it emits a constant hum. I had three fans professionally installed at the same time. The other two (larger, and another brand) are very quiet. This one makes its presence known. Luckily, we don't sleep on our porch and there are a lot of nature sounds to help mask the hum.