none were cut out, you cut a line on each side of the 2 opening from to the top ,,only the outside left and right then heat the plastic so you can strighten it ( you remove nothing just strighten it),,yes both left and right 2 fron the top hole in geille if you look where the air goes through the grille to the intake holes the angle the air would go to get to the intake maybe i could explain it better on the phone if you don't understand what i though i said jim 954 336 3405