Clear Cylindrical Glass Shade - 3-1/4-Inch Fitter Opening This replacement glass shade courtesy of Satco Lighting measures at 4 1/2-inches in height and 3 3/4-inches in width. Its fitter size is 3 1/4-inches. This replacement glass shade features a sleek, clear finish and a ribbed, cylindrical shape. It is perfect for use in both traditional and contemporary rooms 4.5 in. Satco Lighting Clear Cylindrical Glass Shade - 3-1/4-Inch Fitter Opening Lamp - 4.5 In.