Product review (5 stars): Fantastic Value for Replacement Range Hood
It turns out this range hood can vent outside ... or not.  In my case there is no ducted air vent and the installation was easy as can be.  If you're doing it yourself and unsure: just make sure you are completely comfortable with minor electrical work, or call a pro.  You can check youtube for installation videos to gauge your comfort.  You'll need to cut the power and do a little bit of contortion to remove and replace one of the screws, but overall this is a very low-difficulty home upgrade.  If replacing same model, it can be done in a morning by 1 person.  In my case the old hood just had to go.  This is an exact replacement and has so far functioned flawlessly.  The package came super-quick and the instructions were fine (although I'm glad a few people had youtube videos quite honestly ... it's hard to see what you're up against until some screws come out).  I did not need to buy anything else than what was included in the box, except perhaps a light bulb. I bought a bright white energy-efficient bulb.  It works well in this setup - and the bulb cover is included.  It also includes a pre-installed filter - Great Deal!