The Mr. Heater 20,000 BTU Vent Free Radiant Natural Gas or Propane Dual Fuel Heater is a powerful and efficient space heater designed for indoor use. With a heat rating of 20,000 BTUs and a radiant heating method, this heater is capable of heating up to 700 square feet of living space. The dual fuel feature allows for flexibility in fuel sources, while the ventless design ensures easy installation without the need for additional vents. The control type is a rotary button, and the product is lightweight at 23.5 lbs, making it easy to move around as needed. This Mr. Heater model is reliable and reliable for keeping your home warm and comfortable.