https://www.potterybarn.com/products/faris-chalky-ceramic-table-lamp/?cm_srcWsiSubCategory1&recstratShop-Page-2%7CB-CAT-GRP-TOPN-REV 
DIMENSIONS
Small 16 Table Lamp
Overall (with shade): 12.75 diameter 16 high
Harp: 6.5

Accommodates one 60W Type A standard bulb or LED equivalent
Weight: 14.5 pounds
Large 21 Table Lamp
Overall (with shade): 17 diameter 21 high
Overall (without shade): 13 diameter 21 high
Large Shade: 17 diameter 11 high
Harp: 6.5