HomeConcept 181810DRHB Chocolate Burlap Shallow Drum Lampshade, 18" x 18" x 10" Verify size for perfect fit: 18 inch top x 18 inch bottom x 10 inch slant height Standard washer filter: often called a "spider" Fitter, the shade will sit on top your lamp harp and is secured by a finial or cap. 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