2 1/2 inch by 12 inch height with 3 1/2 inch bulge Duplex- Round Bulge chimney fits Duplex burner. Has slim bulge.
Royal Craft brand lamp chimneys are made with borosilicate glass to resist heat, and to make possible the production of glass lamp chimneys that are light, strong, and colorless.
These glass lamp chimneys can be used for all types of non-electric lamps and lanterns. Use these lamp chimneys on Oil, Coal, or Kerosene style flat wick lamps.