Product review (3 stars): okay, but just barely.  find something better even if you pay a bit more
decent material.  terrible workmanship.  i am a decent DIY-er who reads instructions and uses my head, but installation was an exercise in frustration.  positioned mounting bracket, centered, leveled and installed.  test-mounted hood and discovered that the fan assembly which attached to the mounting bracket was mis-centered on the hood by 5/8".  repositioned mounting bracket so that it was now off-center, but the hood was centered.  then noticed that the hood was horribly out of level by a quarter bubble.  again, repositioned mounting bracket so that it is now both off-center and out of level so that the hood is centered and level.  connected power and vent and tested, discovering that draft is exceedingly low- steam from front burners totally escapes the hood, steam from rear burners is only partially captured.  disappointing at best.  will not return but wish we could.

update after 6 months of use.  product continues to function.  we've gotten used to the bluish LED lights.  exhaust is still less than we desire.  we've been up on the roof, and there is plenty of air coming out- we've checked and rechecked the flexible duct between unit and roof, and there are no air leaks, but still, steam seems to linger under the hood far longer than seems normal, even when we remove the filters.