Product review (5 stars): Make sure you have a cable connector and new wire nuts
The hardest part was lifting it into place (I'm an old lady and I did it myself), but the rest of the installation (non ducted) was a breeze.  It really helped that the installation screws for the old range hood were in pretty much the right place for the new installation.  If you have the barest of electrical knowledge then this should be a snap -- turn off breaker, black to black, white to white and attached ground wire.  Very easy.  You'll need an mc cable connector to cover the sharp-edged knock out hole from damaging the electrical wiring since it is not provided, but luckily I had one.  You can feed your electrical wires through a knock out on either the right side or the top.  I had trouble seating the hood into place with all 4 screws so I removed one screw and the whole thing snapped into place.  Later I added the last screw with a washer since the screw wasn't grabbing the hood securely.  Someone recommended Par 20 7-watt LED dimmable bulbs and I LOVE how bright it is. You could do surgery on the cook top it is so bright.  If your range hood is placed very high or if you are very short, then the lights may shine in your eyes and you'll need to experiment with different bulbs, but mine is perfect.  This is a nice looking unit for the price, the fan is much quieter than my very old Nutone and I can actually see what I am cooking because of the two bright lights. Love it.