Product review (5 stars): Having to replace your vent a hood or installing a new one, this is your best option.
I had to replace an old vent a hood that recirculated air back into the kitchen instead of outside. The Broan vent a hood offered the ways to install it, so I could choose to keep it the way I had it, which I didn't do. Or I could vent it out the top through the roof, or the one I chose vent it through the side wall.

The side wall was the easiest and cheapest way so not only that I got a great deal on the vent a hood.

I recommend this to anyone installing a new hood for the first time.