The Shallow Bell Lamp Shade is the condensed version of the traditional bell shape. The dimensions of this shade are meant to counter-balance lamps with a more voluminous base. This shade also comes in a wall shade option for use in tight spaces where a narrow width is required. With a variety of fabrics and color options, it is versatile enough for use in traditional, transitional and modern homes. The Shallow Bell Lamp Shade is part of the Royal Designs, Inc. Timeless Basic Shade Collection. Royal Designs has been in the lamp shade business since 1993 with our multiple shade lines that exemplify handcrafted quality and value. Height is measured by slant height from top to bottom of the lampshades? front face. Measurements listed as (TOP x BOTTOM x HEIGHT). Please measure your existing shade--a replacement harp may be needed for a proper fit or additional adjustment if changing height of shade.