2 1/2 inch fitter by 7 1/2 inch height with 3 9/16 inch bulge, clear chimney. Fits #1 size burners and 2 5/8 inch galleries All glass chimneys will vary in thickness due to the manufacturing process. They will fit the holder/burner specified in their description. Made with borosilicate glass for extreme clarity, durability and longevity. Designed by B&P Lamp Supply B&P Lamp 2 1/2 Inch Base by 7 1/2 Inch Tall Clear Oil and Kerosene Lamp Chimney - 2 1/2 inch by 7 1/2 inch height with 3 9/16 inch bulge, CLEAR chimney fits #1 size burners and 2 5/8 inch galleries. Features Include: 2 1/2 inch fitter by 7 1/2 inch height with 3 9/16 inch bulge clear chimney., Fits #1 size burners and 2 5/8 inch galleries, All glass chimneys will vary in thickness due to the manufacturing process. They will fit the holder/burner specified in their description., Made with borosilicate glass for extreme clarity durability and longevity., Designed by B&P Lamp Supply