The Dyna-Glo Delux 50,000 BTU Portable Kerosene Forced Air Heater is ideal for outdoor/indoor construction, as well as industrial & commercial applications, making it an excellent choice for your portable heating needs. It requires little to no assembly, is 98% fuel efficient, and covers areas up to 1,200 sq. ft. Included are overheat shutoff protection, a built-in carrying handle, flameout sensor, and run-time fuel gauge. All Dyna-Glo Delux Kerosene Forced Air Heaters are CSA certified for multi-fuel use with these fuel types: K1 Kerosene, Diesel #1, Diesel #2, Fuel Oil #1, Fuel Oil #2, Jet A and JP-8. However, K1 Kerosene is the manufacturer's recommended fuel for optimal, cleaner burns and long lasting product life.