Flat Panel Glass Lamp,Slag Glass Lamp, This "Flat Panel Slag Glass Lamp" measures 21 inches in diameter and is a 12 inch drop. Wonderful condition, this flat panel slag glass lamp would make a fine addition to any home. Be sure to click all the thumbnail images to view this slag glass lamp in more detail.Shipping extra. Connecticut residents add 6% state sales tax. Buyers outside the USA are responsible for any taxes,tariffs or customs that might apply.