FenchelShades.com Fenchel Shades 18 in. Top Diameter x 19 in. Bottom Diameter x 12.5 in. Slant, Empire Lamp Shade - Linen White

This Fenchel Shades lamp shade has a top diameter of 18 in., a bottom diameter of 19 in., and a slant height of 12.5 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.