Mr. Heater 9,000 BTU Radiant Portable Buddy Propane Heater is a versatile and convenient heating solution for the cold winter months. Designed for both indoor and outdoor use, it can be placed -standing or mounted on a wall, making it adaptable to various spaces. Its lightweight and portable design allows for easy transport and placement anywhere around your home. Equipped with safety features, including an automatic low-oxygen shutoff system that prevents operation above 7,000 feet altitude, this heater ensures safe use in a variety of environments. I for outdoor activities and events, it works well in garages, tents, patios, porches, and cabins. The heater uses either a 1 lb. or 20 lb. propane cylinder with an optional hose connection model. Measuring 9 inches wide by 14 inches long, it efficiently heats an area up to 225 square feet with a burn time ranging from 3 to 6 hours.