12x17x10 White Floor Shantung Lampshade with Brass Spider fitter By Home Concept - Perfect for table and Desk lamps - Medium, White VERIFY SIZE FOR PERFECT FIT: 12" Top x 17" Bottom x 10" 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.