This Fenchel Shades lamp shade has a top diameter of 5 inches, a bottom diameter of 12 inches, and a slant height of 8 inches. The vertical height of this shade is about 7.25 inchesThe attachment type is a Chimney fitter, also referred to as a hurricane fitter. It is not very common anymore, but is necessary if you have a lamp requiring a chimney. Generally, antique lamps--especially oil lamps (hurricane lamps) require the chimney fitter. The chimney fits directly over the glass opening at the top of these kinds of lamps. The inner diameter of a standard chimney fitter is 2 3/8". This particular chimney attachment has a 2-inch drop, meaning the ring attachment sits 2 inches below the top of the lamp shade. This Product is proudly made in the USA with US materials.•  First photo is to reference the style of shade, Second photo is the COLOR of the shade•