I would like to install screen doors, but my door frames are not standard. I've looked at screen doors and they don't look like they can be adjusted. They are all standard sizes. Although someone has told me they can be adjusted, and someone else mentioned buying screen door kits.
First of all ,I would list the exact sizes you have in your house and describe how you measured them. This gives us a starting point.
A general answer to your question is that storm door companies make custom sizes.