Can I hang a door in a frame that was made to be doorless? My house has a regular, single door size entryway to the dining room. There is no door, but there is a frame around the entry. The frame does not have the door jam (Not even sure I am wording this right, but I’m referring to the center thin strip of wood that a door would rest against inside of a frame) that I see on other frames with existing doors in the house. I obviously have no idea what I’m doing, so any help would be greatly appreciated.