This Westinghouse Lighting Handblown Clear Glass Chimney is an ideal choice for keeping your oil lamp looking and functioning its best. The quality glass chimney will help draw oxygen into the burner for a steady, flicker-free flame. If you have a converted electric lamp, enhance it with this classically styled chimney for an authentic period look. This chimney is 7-1/2 in high and has a 2-5/8-inch fitter, 3-1/2-inch bulge, and 1-5/8-inch top opening. The handcrafted nature of glassware produces minor differences in design and sizing. Subtle variations will occur from piece to piece, adding to each one's unique qualities. Measurements may vary slightly.