Lopis, did you print it with scaling, the door frame is 1.5" wide, should be plenty for most figures?
Anyways, I just wanted to make sure most generic infantry would fit nicely, all I have is a few Space Marines and a pile of AT-43, which all fit fine. Oh and Lopis, I figure most people would make ruins with these, not intact buildings, because 7 inches or so wide is not very big. That is something I never mentioned though.