I just purchased this hood yesterday. It is in route as far as shipping. I was looking up installation instructions on the AKDY site. Houzz listing states 870 CFM, AKDY site listed 400 CFM. My range list 600 CFM minimum. My state doesn't require an exhaust at all but since I am upgrading to a pro range thought I should follow minimum recommendations per Blue Star Range. I was expecting an 870 CFM hood. Please advise.

Did you get an answer on this question? I'm also curious if the fan is indeed 870 CFM.

It was shipped to my house, and returned due to dents, scratches. It was only 400 CFM. Thin stainless steel. I ended up getting a $950 Braun on sale (not any longer) for $675 on Jet.com. It has glass though. I gave up on AKDY after 2 dented shipments, UPS refusing to return it without us paying for new packaging because they have been blamed for dented hoods. The AKDY packing was entirely insufficient ....nothing at all like the Braun nor a farm house sink I bought from HOUZZ. The styrofoam isn't dense enough.