Really really nice model.

no space inside where I could place light not intersecting with openings

Ah yes, and playing with increasing size and placing lights in different places will take a bit of time testing. But the model is very nice all the same.

On another note, I also tried a quick hinged glass door with the prefixes:

SF 3d models 508
ok
glass_door_hinged_cutout_plain.sh3d