Stay warm and toasty wherever you go with the Mr. Heater Big Buddy Portable Heater! Designed for convenience and performance, the Big Buddy Portable Buddy is indoor safe and heats spaces ranging from your home’s garage to a large camping tent.4,000, 9,000 or 18,000 BTU OutputUtilizing propane gas and featuring an impressive 4,000, 9,000 or 18,000 BTUs of heat output, the Big Buddy Portable Heater is capable of heating up to 450 square feet of enclosed space.Effortless Use and Maximum PerformanceIn addition to its impressive technical capacity, the Big Buddy Portable Heater features a variety of elements that enable effortless use and maximum performance. With its easy- start four-position control, fold-down handle, swivel-out fuel connection and a large overall heating surface, this unit raises the bar when it comes to portability and distinction in heating.Safe HeatingThe Big Buddy Portable Heater is built for safety and features an Oxygen Depletion Sensor (ODS) and tip-over detection system which accounts for low oxygen or accidental falls and automatically turns off the unit, ensuring safety and ease of use for a long time to come! Wherever your travels take you, wherever you’re going on your journey, bring the Mr. Heater Propane Portable Buddy Heater along, so you can stay warm and comfortable! Note: The fan is not included.Bundle IncludesMr. Heater Portable Big Buddy Propane Heater10-Feet Propane Hose AssemblyMr. Heater Brass Propane Tank Refill Adapter