Bought two of these fans to replace two existing fans, and both of them were installed by my father in-law (a professional electrician) 6 weeks after they were delivered. Both of them are mounted on an angled ceiling and, in his words, the hardest fans to balance in 37 years of being an electrician. He guesses he's installed a few *thousand* fans in that time. 

Within a month, both fans have developed a rattling sound coming somewhere in/around the light shroud. We've removed both fans TWICE, attempting to silence the rattling to no avail. And, of course, this all started - conveniently - about a week after the Wayfair return period had ended. So now I'm the proud owner of not one but two annoyingly noisy fans I had the privilege of paying $748 for....