Royal Designs 12" Rectangle Hardback Lamp Shade, Black, (4 x 6) x (8 x 12) x 7.5 Shade Dimensions: (4 x 6) x (8 x 12) x 7.5 Shape: rectangle Fabric: hand tailored silk-type shantung fabric, premium Gold softback lining Washer: standard (0.5 inch recess) brass-finish spider fitter with trademark stamping. This shade fits using lamps with 6 in, 8 in, 10 in glass reflector/diffuser bowls Frame: heavy Grade 1.5Mm rust resistant metal Frame. Thicker than typical standard lamp Shades