Exterior Material Aluminum; Wicker Exterior Material Details Rustproof aluminum and wicker Burning Area Material Stainless Steel Fuel Type Propane; Natural gas (Natural gas conversion kit is NOT included with fire pit due to regulation reasons. Customers need to buy it separately for conversion.) 'Fire Pit Diameter: 15' 'Fire Pit Dept: 1' 55000 BTU Output Note: Natural gas conversion kit is NOT included with fire pit due to regulation reasons. Customers need to buy it separately for conversion.