Heavy-Duty Cast Iron Cleveland Iron Works Camp Stove Double Barrel Expansion Kit. Double up on converting barrel drums into an efficient heat source with a Cleveland Iron Works Expansion Kit. Made of heavy-duty cast iron, the kit includes barrel spacers, 1 male flue and 1 female flue adapter. See #712084 Starter Kit for door and feet. Heavy-duty cast iron construction. Includes barrel spacers, 1 male flue adapter, and 1 female flue adapter. NOTE: Barrel, feet and door not included – see #712084 for Starter Kit. Additional supplies needed for safe and complete assembly. Weight: 15.4 lbs.