Opal glass shades like the 202OP are somewhat warmer in appearance than their etched-glass cousins. For example, the main difference between this shade and the 202CE is that when opal glass is lit from within, the lightbulb isn't visible.Tips: Opal shades have a softening effect on bright incandescent bulbs, and also help tone down the intensity of compact fluorescent bulbs. When assembling several fixtures in one room, match glass finishes for consistency; look for the letters "OP" in our shade item numbers. See more shades with a 3 1/4" fitter. Specifications Item # 202OP Fitter 3.25" Width 6" Height 6" Finish Shiny opal Price As Shown Base Total $16.00 Grand Total $16.00