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"
 
SHADE CARRIERS 
All Empire shades ( sizes 8"-12") have in-built shade carriers. For our Pembroke shades, please see below for our recommended shade carrier sizes:

 

14” Shades -  5” Shade Carrier
16” Shades - 6” Shade Carrier
18” Shades - 7-8” Shade Carrier
20"-24" Shades - 9-12” Shade Carriers