The basic definition of portiere is a "curtain hung over a door". Portiere curtains or panels are a beautiful way to treat an interior opening. I want this for my bedroom door! It already has a curtain, now I need to dress it up.
Portières, or doorway curtains, used the same rods and rings as window treatment. Popular from the until the end of the century, portières framed the entrances to public rooms, such as a parlor or dining room.