6-Inch Drum Shade Replacement Glass Shade - 5-7/8-Inch Fitter Opening If you're looking for a replacement glass shade that will both protect your light bulbs and decorate your spaces at the same time then this replacement shade may just be what you're looking for. It features a two-toned, white finish and boasts an intricate ridged design. This replacement drum glass shade's fitter measures at 5 7/8-inches. 3.5 in. Satco Lighting 6-Inch Drum Shade Replacement Glass Shade - 5-7/8-Inch Fitter Opening - White Lamp - 3.5 In.