forced air in heater am tam special order • for use with propane gas • heats approximately 800 sq ft • runs up to 12 hrs on 20lb tank • high temperature limit switch • piezo ignition • 10ft hose & regulator included • for use with propane gas • heats up to 3,000 sq.ft • rugged & durable steel construction • heavy duty high output fan • hose & regulator included • for use with kerosene or diesel • operates approximately 11 hours • overheat safety shutdown • continuous ignition • heavy construction • enclosed motor