Mounting instructions are very confusing. Step 3 shows an and b…they are OPTIONS, not two parts that need to be completed. Also, the instructions were printed so faint that I had to take pictures on my iPhone just to see the diagrams clearly. The fan is whisper quiet even on its highest setting and blows a fair amount of air. I wish the fixture didn't beep every time you turn it on. Good for the sale price of $85!