Sizes given as top x bottom x height. Glass sconces and hurricanes for table and wall replacement. The fitter size is the opening the glass will fit into. for a 1 5/8 inch fitter the the outside glass diameter will measure 1 1/2 inches. The standard for these shades is 8" in height. for table applications. We gage the size of the glass by the height of the candle stick or wall sconce. If the height of the candle stick is 6" you would want a 6" tall sconce. The height of the sconce with include the height from the very bottom to the very top. Please visit our hurricane section for taller replacements.