Outward opening french doors

by Adam
(San Diego, CA USA)

The entrance to my home are french doors that open outward onto a deck. The dilemma I have is that I need more ventilation in the room that the doors enter to as there are no windows. The complicating factor is that I have cats that cannot be outside, so a retractable screen would not be an option as the cats could easily duck under or to the side to exit. I need something more rigid.

Note that there is no track on the bottom.

Perhaps you could make a recommendation?

See the attached picture.

Any advise would be much appreciated!!!