B&P Lamp No. 1 Size, Princess Feather Frosted & Clear Chimney - Reversed Princess Feather pattern embossed chimney with clear top and frosted bottom. 2 1/2 inch fitter by 8 1/4 inch height with a 4 5/8 inch bulge. Fits #1 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.