The L.B. White Portable Gas Heater Diffuser is a portable propane heater that provides up to 100,000 BTUs of heat output. It has a durable steel housing and is designed for indoor or outdoor use. The diffuser disperses heat evenly over a 25 ft diameter area. Safety features include an auto shut-off if the flame goes out. It requires a 20 lb propane tank (not included). This portable heater is ideal for heating barns, garages, patios and other spaces. It measures 21 in x 21 in x 12 in and weighs 43 lbs.