Mr. Heater Corporation F299830 30,000 BTU Vent Free Radiant Propane Heater, MHVFRD30LPT 30,000 BTU Liquid Propane heater to heat spaces up to 750 sqaure feet. Radiant heat burner. Ignition - Electronic Automatic low oxygen shut-off system (ODS). CSA Certified Operating this heater at altitudes over 4,500 FT above sea level could cause pilot/ODS to shutdown the heater. Theromostat, legs and wall mounting hardware included