Product review (5 stars): poor man's commercial kitchen :)
Looks great.  I used 4 wall anchors and tapped them flush to the wall.  I put the backing up and behind my new Broan fan a FULL 1 inch to hide the screws on the top, and it does Not cause any issues just looks "real gooood right here jus like that" .  Just remove the protecting film around the screw hole but NOT the rest of the backing to protect it for as long as you can, because man can it scratch easily during install.