VERIFY SIZE FOR PERFECT FIT: 10' Top x 20' Bottom x 15' Slant Height STANDARD WASHER FITTER: Often called a 'spider' fitter, the shade will sit on top your lamp harp and is secured by a finial or cap. Home Concept shades include heavy duty brass frames and fitters for long-lasting quality. ONLY THE BEST: Home Concept shades only use the finest materials, from fabrics to parchments to the reinforced, heavy-duty brass frames. We want your shades to last. PROFESSIONAL DESIGNER QUALITY: DELUXE hardback lampshade, found in better lighting showrooms. Durable Hotel quality shade. MAKE SURE TO MEASURE: For best fit, measure you existing shade before purchase. The third dimension in the slant height of the whole shade, not the distance from bottom to fitter.