FenchelShades.com 18 in. Width x 12 in. Height Black Paper with Gold Foil Interior/Brass Hardware Drum Lamp Shade

This Fenchel Shades lamp shade has a top diameter of 18 in. a bottom diameter of 18 in. and a slant height of 12 in. This attachment is called a washer attachment and is brass 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.