up for sale is a Large Vintage White Porcelain or Ceramic Hurricane/Lamp Shade - 14.5" Tall, we are not experts on the material used as we are not sure of the material it is made from. We did not see any cracks on the unit. Top hole measures 1.75" as an inside dimension and the bottom hole measures 3 5/8" also the inside dimension. A very nice ornate piece in very good plus condition. We did not see a manufacturer mark. Weighs 4.5 pounds unboxed