2 United States Stove Company coal/wood burners. One is assembled and used for a few hours just see how it worked, one is unassembled, never used. Rated at 119,000 BTU and 2,500 Square feet, Thermostatically controlled forced air. I have some single wall stove pipe to go with if you want it. One stove has dented sheet metal, it's repairable/straightenable. Compare these by typing in SKU 6381350 on Menards website, they sell for $2,399.99 new.