This is a quality wire frame in an unusual pretty scalloped flower shape for making a pleated/gathered soft bodied lampshade.
Base diameter 16”
This frame has a duplex ring fitting so will need either a shade carrier (floor/table lamp) or spider adapter for a ceiling pendant both of which I stock.
It is pictured on a 6” shade carrier, you may wish to use an 8” shade carrier if you’d prefer the lampshade to sit higher.