My install is taken from other places and posts in the forums, the only thing I added was the mounting box. So I did not take pictures of the install and all I have are a couple of pics of the finished thing. The diagram is taken from someone elses post but it is most helpful. It simply shows the separation between intake air and exhaust. Following that diagram as a general idea, I used 3/4"insulation board taped with good quality metal vent directly to the metal surrounding the exhaust on the a/c unit, creating a duct to the hole in the rv wall(bottom hole) and taped the duct to the rv walls surrounding the hole. As for the intake, it was basically complete at this point because the exhaust was now isolated. Still, I wanted to use some of my closet, so I isolated the intake from the closet by creating a tight fitting shelf 5" above the a/c unit with 3/4" plywood, having a facing board down to the a/c unit in front(closing off the 5" gap I just created).
Oh Boy, I can't find the diagram
. Anyway, it was a line drawing of illustrating the need to separate the exhaust and intake. Maybe I'll find it and post it later.