The installation will be similar to that for a window.
How to install portable air conditioner on sliding door.
Then i would measure and cut a strip of sheet foam to put.
However you will probably need to buy a piece of plexiglas to fill the gap between the exhaust hose and the top of the door.
So lets fix that.
Vent the air conditioner through a sliding glass door.
It will also make using the door very inconvenient.
Adapting your portable air conditioner for special circumstances if you don t have traditional windows or a sliding door for venting your portable air conditioning unit don t despair.
Then i would open the sliding door set the ac unit on bottom slide rail tilting toward the patio and close tightly locking it into place.
Though window brackets are most often installed horizontally at the bottom of a sash window they can also be installed vertically to fit into sliding door and window openings.