Up for auction is an Antique Vintage Gas Station Porcelain Barn Light 17" Inch Industrial--it has been rewired. I has a diameter of about 17 inches. It does have some imperfections as can be seen in the pictures. This would be expected for something this old. But in general it is in great shape!! It hangs down from the ceiling approx. 21 inches. This can shortened by replacing the rod with a shorter one that can be bought at Home Depot.  . Please email me with any questions.