@hdbbstephen: I'm not sure I will be doing these in 28mm. I'm going to try them in 6mm first. If that works, you never know.
I have been working on more designs. This is just doors and windows that can be used for scratch building terrain or the basic designs can be added to my building designs.
I would love to hear your input. What do you like? What could be better?
Doors (openings are mostly 8mm x 4mm
Windows (these are generally 4mm x 8mm)
Garage Doors (20mm x 30mm)