Nice matched set of early 1900s Department Store, Drug Store, or Schoolhouse electric ceiling lighting fixtures. The milk glass uppers and the crystal bottoms are held together by a metal band which is adjustable so you can remove the bottom crystal to easily change the light bulb. The bottom crystals have a slight lavender cast caused by sunlight reacting to the manganese in the glass. Manganese was added to the glass to make it more stable, clear and crystalline, not knowing at the time prolonged exposure to sunlight would turn the glass purple. The widespread practice of adding manganese to glass production was mostly ended by 1915. Height: 16 3/4 inches Width: 9 1/8 inches Although shown on a vintage flush mount ceiling fitter in brushed metal, any of these schoolhouse lights can be dropped on a chain or pole if a pendant look or longer drop is required. The fitter is also available in chrome/nickel or painted to match your interior. Alterations from the flush mount ceiling fitter in brushed metal are charged at our cost only. UL listing available at additional cost.