Please refer to the below size guide for details of our lampshade measurements. 
 
 
Shade Style  Base Diameter (inches) Top Diameter (inches) Slope (inches)
Empire 8" 4" 6"
Empire 10" 5" 7"

Empire

12" 6" 8"

Pembroke

14" 9" 9"

 Pembroke

16" 10" 10"
Pembroke 18" 11.5" 11.5"
Pembroke 20" 13" 13"
Pembroke 22" 14" 14"
Pembroke 24" 15" 15"