Evacuation murale pour climatiseur mobile

How to evacuate the hot air of a mobile air conditioning in the attic? You must use a roof window caulking kit (Velux) which is neither aesthetic nor practical to install. I present my installation to you: a hatch with plug is installed in the wall, a 2m pipe crosses the unfinished part of the attic, and the hot air is evacuated outside the house by a grille. I can turn the air conditioning on with the window closed and when I don't need it, I just have to put the plug back on the wall. List of parts and photos on my website: https://www.magicmanu.com/maison/comb...