Manufacturing doesn't allow for really anything that isn't a 100 of something...but I was actually thinking about this earlier.
It would be an option at custom rates, but if it is something you want modded, I think I have the ability to do that. The trick will be getting the flange made, but I think a custom jig can be rigged up. You would be paying for the material (cell cast acrylic) laser bed time, and the crafting time on the jig. I think I would drill the holes out last to compensate for the heat stretching, so there is some time there too.
Something else that could be done is I could build a window into the current side panel. I would basically cut out the vented part of the panel, and rivet in an acrylic window with the same vents. This would take away 1/16" of interior space. (not pictured)
My lights aren't working in this render scene...but there it is anyways.