Amazon.com: Mr. Heater 18000 BTU Vent Free Radiant Propane Indoor and Outdoor Wall or Floor Heater with Thermostat for Spaces up to 500 Square Feet, (2 Pack) : Home & Kitchen
Dyna-Glo 30000-BTU Wall-Mount Indoor Natural Gas or Liquid Propane Vent-Free Infrared Heater in the Gas Space Heaters department at Lowes.com