Mr. Heater Hero Forced Air Propane Heater 30,000-60,000 BTU/Hr. MH60CLP 30-60,000 BTU/HR propane heater heats up to 1500 square feet Ships with 1 interrnal battery (4 hours), second battery can be added to extend runtime an additional 4 hours (8 hours total) Runs up to 14 hours on a 20 pound propane tank on low setting Electronic Ignition ETL Certified 10 foot hose with regulator included