Kero World KW-24G 23,000-BTU Indoor Portable Convection Kerosene Heater 23,000-BTU indoor kerosene heater for up to 1000 square feet Simple matchless ignition; 360-degree protective grill promotes safety Built-in 1.9-gallon tank for up to 12 hours of heat; use clean kerosene only Delivers efficient convection heat; portable design; 2 C batteries included Measures 18 by 18 by 22-1/5 inches; 2-year limited warranty