Desa B50A is a portable heater with an output rating of 50,000 BTU per hour, making it suitable for heating large spaces. It runs on kerosene or No. 1 fuel oil and has a fuel tank capacity of 3.50 U.S. gallons, providing a long runtime. The heater features an air pump with a pressure of 3.6 PSI, ensuring efficient fuel combustion and heat distribution. It has a built-in photocell and safety control assembly for automatic ignition and flame monitoring, enhancing user convenience and safety. The Desa B50A comes with a 6-foot extension cord for easy placement and operation.