Mr. Heater 30000 -BTU Wall or floor -Mount Indoor Natural gas Vent-Free Convection Heater

30000 -BTU Wall or floor -Mount Indoor Natural gas Vent-Free Convection Heater. Convenient top-mounted comfort control adjustable thermostat. Battery operated electronic ignition - requires one AA battery (Included). Easy to install - wall mount or free standing (feet kit included). ODS low oxygen safety shut-off system. Operates during power outages - without electricity. Economical - 99.9% efficient. No venting or chimney required