Bentley Collection Solid Bass with Satin Nickel Finish Light with Satin Etched Glass. Glass Dimensions: 5.1” Diameter (Top Part) & 2.4” Diameter (Bottom Part) x 4.7” Total Width x 9.1” Total Height x 4.5” Back Plate Diameter. Top Shade Glass Replacement Cost: $41.00 & Bottom Glass Replacement Cost: $19.02 Bentley Collection Solid Bass with Satin Nickel Finish Light with Satin Etched Glass. Glass Dimensions: 5.1” Diameter (Top Part) & 2.4” Diameter (Bottom Part) x 4.7” Total Width x 9.1” Total Height x 4.5” Back Plate Diameter. Top Shade Glass Replacement Cost: $41.00 & Bottom Glass Replacement Cost: $19.02 If you have any questions please call 212-832-4200