When I purchased this and had it installed over my stove and under a cabinet several years ago, I did not have a vent going through my roof. I recently had a new roof put on and asked them to add this. I am in need of what I understand to be the Air Damper Part # W10843943. I have a contractor doing this for me but I want to make sure this is the correct part and all I need for this.
Thank you


