Urbanest Blue Burlap Drum Lampshade, 10x12x8.5", Spider Fitter Urbanest Classic Handmade Blue Burlap Drum Lamp Shades. Hardback French Drum Style Lamp Shape; Spider fitter. Measurements: 10" at the top; 12" base; 8.5" on the slant. Natural burlap drum lamp shades also available in our Amazon Store. Suggested maximum wattage for shade is 100 watts.