Product review (4 stars): Useless manual
You better be pretty handy if you plan to install this hood yourself.  First off, throw the manual away, its totally useless.  The quantity and type of screws that come with it do not match what the manual says.  They also will just fall through the mounting hole so I had to supply my own screws.  The electrical knockout and exhaust opening was a bitch to remove and I had to trim the damper so it would not bind.  Once the hood was installed, however, it did perform well but I agree with other reviews that the air flow seems to be a little weak.