Product review (4 stars): Would be 5 stars if it could pass electrical code in the U.S.
This is a very powerful unit, and if you are installing this as a DIY project I would highly recommend it.  However, keep in mind that it is NOT U.L. listed so therefor it can not be installed by a licensed electrician and pass code.  Also, most building codes require a fresh air intake installed in the kitchen if cf/m exceed 400, so again there will be a code issue.  Again, 5 stars if it were U.L. listed.

The seller gets 5 stars from me though, they are exceptional.  Thanks!