This grease lamp should fit into most lanterns unless the candle cup is permanently fixed in the bottom. About 3" across and 2 1/2" tall. Made of earthenware with clear glaze. We include jute wick and instructions so you can use it right away. Burns well using vegetable oil or animal grease. Inspired by 18th century Moravian design. As with all things that are on fire, NEVER leave unattended.