I meant to add this earlier, but had to go out for a while.

My guess is that the screens/mesh will eventually become solid, like walls. If you can add more surface area to the whole structure as in a lot of five-sided boxes within the overall rectangular shape, it will be productive.

Excerpt from Robert Crais' "The Monkey's Raincoat:"
"She took another microscopic bite of her sandwich, then pushed it away. Maybe she absorbed nutrients from her surroundings."