This square bell with Inverted corners designer lampshade is a part of Royal Designs, Inc. Timeless designer shade Collection and is perfect for anyone who is looking for an elegant yet detailed 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 fabrics) interior fabric: off-white softback lining (black and other colored fabrics have gold lining) washer: standard brass-finish spider Fitter, use a finial to fasten shade. (All shades with 9"+ top diameter have a v-notch Fitter for use on a 6" or 8" reflector bowl) trim: top and bottom designer trim (single, double or braided) 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-aa replacement harp may be needed for a proper fit or additional adjustment if changing height of shade.