I don’t see how assembling a bunch of screen cages will take much more time than just cutting and screwing a few dowels to make a frame. Screw or staple the film to the outside - done.
PVC sticks are available in one by one sizes, or wood. The PVC film could act as your walls… The same as your acrylic but cheaper.
Maybe I’m not following correctly… But at some point I thought there was mention of creating screen cages or using acrylic. This can be attached to whatever frame you were going to attach the screen or acrylic to. It is transparent but slightly opaque.
I was talking about spiting premade cages with acrylic, or putting that white plastic bathroom stuff between the screen frame pieces when i assemble the screen cages, and then splitting them.
After that,putting the cages on wire shelf racks.
Building cages from scratch,structure and all, would be extremely complicated and time consuming. Cant use film for the floor, or the outer walls, In am not sure i would trust that film for anything tbh, but maybe im not understanding what you are talking about.
Would then need screen tops, and would need them stackable, so would need to raise the floor of the next above that.
Then small screen doors, that I would have to make 1x1. Would have to drill out the hinges, and the locks, ect ect ect.
I do not know that I am envisioning what you are saying very well? I do not understand what your idea is?
Building something like this (This is the Dragonstrand Nursery)
From that greenhouse film and PVC is going to be extremely complex, time consuming and likely more expensive than buying a premade option.
Each one of those cages is 6x15x15, building something like that, is very complex and expensive, and time consuming (which is why it costs so much). Thats why we were looking at the premade options like the 10x10x12, the 8x8x12, and they are small, but that is what it takes.
Its a matter of finding the best balance, of size, to ease, to accommodation.