I think you guys are missing the porch part of RF's request. The storm door he is seeking does not have an entry door right behind it. The way I understand it, you walk up a couple of steps, open a in-swinging door, and now you're on the porch. Take another couple of steps, and you're at the entry door of the house. Hanging a entry door on a porch would look odd. If there are 3 or more steps and no landing, the door must be in-swing.
This site shows what he's looking for -
https://www.pcaproducts.com/blog/do-i-need-an-in-swing-screen-door