If your exterior wall is not brick, then you can do it by yourself. You should start from inside first, cut dry wall, make some small hole in the exterior, then go to outside to make a big hole, so that you can put your vent on the wall.
If your exterior wall is not brick, then you can do it by yourself. You should start from inside first, cut dry wall, make some small hole in the exterior, then go to outside to make a big hole, so that you can put your vent on the wall.
If your exterior wall is not brick, then you can do it by yourself. You should start from inside first, cut dry wall, make some small hole in the exterior, then go to outside to make a big hole, so that you can put your vent on the wall.