The Insectary is a many windowed box

Yesterday I posted a photo of the Insectary's front and right side walls. Over there on the left is the Insectary's other long wall. It too is lined with windows, but there's no door. 

Over on the right is the back wall; only 3 windows on this end. So, here's a count of the window castings needed for each wall:

Right: 9 ( + 1 door)

Left: 10

Front: 3

Back: 3

Total: 25

With 25 windows there's no way I'd try and build this structure with an old school window making method. I need to rummage through Tichy's and see if they have a suitable casting.