Product review (4 stars): This is a commercial grade heavy duty fan
The only reason it received 4 stars and not 5 is because it didn't work when it was first installed and I had to call z-line for another part, but I'm not 100% sure that the electrician installing the fan broke the part or it was like that. [Z-line quickly sent me a new part no questions asked] I saw other reviews saying that the fan is very loud and its noisy, etc. This is not a rinky dink cheap little fan, it's a heavy duty commercial size fan with 4 different settings. True its louder than a normal hood range but its supposed to be because how else are you supposed to get the smell out of the kitchen? you certainly can't get it out with one of those little $50 dollar ones.  This fan is exactly what I expected, on setting 4 it will get rid of any nasty smell while cooking.