Vintage Art Deco Ceiling Light Fixture Cover Lamp Shade Red hobnail Glass 12. The red oval medallions have some loss of the color. The glass needs some gentle cleaning.The globe has 2,5 inch metal copper? The round opening is 4 inch. It is not designed to screw itself to the fixtures. This item is in the category "Collectibles\Lamps, Lighting\Lamp Shades". The seller is "penza2" and is located in this country: US. This item can be shipped to United States.