Product review (3 stars): GO INTO THIS WITH YOUR EYES OPEN
First, I purchase this item from another online site.  It was under the brand name of Golden Vantage and I didn't know that it was actually AKDY.  I read posted reviews criticizing the difficulty in installation the AKDY hoods so I thought that I was avoiding that brand.  Be warned,not all but most of the reviews are true.  My contractor is very skilled and has installed over 50 hoods but this was far and away the most challenging.  The instructions are very generic and tell you nothing or are just wrong.  The included materials often do not match and you have to ignore the instructions and do things like drill your own holes (the holes in the brackets do not match the holes in the unit), cut the chimney covers to size (not easy if you don't know how and don't have the tools), and discard the included rubber slinky flex duct and purchase solid ducts from the hardware store to increase air flow and decrease noise.  One mounting screw head broke off and another screw bent both with very little stress, and no washers.  The included screw anchors for mounting is a very bad idea given the weight of the unit.  Buy your own screws and be sure to use washers for mounting directly into a sturdy frame attached to the ceiling joists.  The unit looks great once installed but your next challenge is to figure out how to operate it.  There is a sliding scale that gives the impression that you can customize the fan speed but there are actually only three speeds (controlled by weird icons).  The manual is generic for all models and is a farce in its attempts to describe certain functions.  The timer function is not even mentioned.  However they include a disclaimer that in essence states that the instructions may be worthless because it may not be for your model.  The hood is made in China and it seems that the installation and operation instructions were written by someone with limited language proficiency.  it gets you wondering about the quality of the unit.  If I had known all of this ahead of time I would have gladly spent more than twice the amount for not only a better hood but also for peace of mind and to avoid the considerable stress.