Diameter of fitter gallery is 3 1/2 (8,3 cm) but fit to most of duplex burners. The item "Beautiful pair of Victorian glass oil lamp shade" is in sale since Thursday, January 7, 2021. This item is in the category "Antiques\Antique Furniture\Lamps\Victorian (1837-1901)". The seller is "helihey" and is located in Jesteburg. This item can be shipped worldwide.