Just a thought.
Step 1.Remove the rear window. Take about 20% of the top portion of the opening, build a box to accept a ventilation fan. (perhaps a small explosion proof barn fan with built in loovers.)Install a new window in the lower portion of the opening.
Step 2. Remove a few panes of glass from the doors & install new windows with a glass screen combination. Wire up your fan to a humidestat set up and you should be good to go. I actually did this for a friend and its been working well for over 9 years. Works good for taking out fumes etc.
Just my 2 cents
Hope this helps
