I am planning to install my side louvers (upgrade version) and have read many posts on the topic. I do still have a couple questions.
1) when cutting the opening, should the size top to bottom be as close as possible to the dimension of the louver which measures 5”? Or should that opening be slightly smaller? If it should be smaller what should it measure?
2) my body has no cut outs. With that being said, do you all recommend the location that is outlined in the manual?

Thanks in advance for your input.