FenchelShades.com 18 in. W x 9 in. H Rich Red/Nickel Hardware Coolie Lamp Shade

This Fenchel Shades lamp shade has a top diameter of 5 in., a bottom diameter of 18 in. and a slant height of 11 in. This attachment is called a washer attachment and is nickel in color. It is also known as a spider attachment. If your lamp has a harp, then you will generally need a washer attachment. The inner-dimension of a washer attachment measures slightly over 1/2 in.