This rectangle cut corner basic lampshade is a part of royal designs, INC. Timeless basic shade collection and is perfect for anyone who is looking for a traditional yet stunning lampshade. Royal designs has been in the lampshade business since 1993 with their multiple shade lines that exemplify handcrafted quality and value. Exterior fabric: hand tailored silk-type shantung (except linen, mouton, burlap & faux rawhide fabrics) interior fabric: off-white softback lining (Black, burlap & faux rawhide fabrics have gold lining) washer: standard brass-finish spider fitter, use a finial to fasten shade. Trim: top and bottom trim (single or double) with vertical piping frame: heavy grade rust resistant metal frame bulb: suggested maximum wattage is 150-watt for most sizes (clip on shade Max 60W) HEIGHT is measured by slant HEIGHT from top to bottom of the lampshades' front face please measure your existing shade--a Replacement harp may be needed for a proper fit or additional ADJUSTMENT if changing HEIGHT of shade.