I just had a discussions with uuuuuugggggg with the idea to make programmable vents over the wall (with regards to his over the wall coolers and vents in his "replace stuff" mod). He suggested I should ask the creators of the programmable vents to make them over the wall.

For reference to make things over-wall, the needed def changes are here: https://github.com/alextd/RimWorld-ReplaceStuff/blob/master/Defs/OverWallCoolerVent.xml