The 80000 BTU portable kerosene forced air heater we recommend is an ideal choice for outdoor/indoor buildings, as well as industrial and commercial applications. It hardly requires assembly and is very convenient to use, with a fuel efficiency of 98% and an area of up to 1900 sq. ft. This includes temperature limit control, thermostat, flameout sensor, and running fuel gauge. All kerosene forced air heaters have passed CSA certification, allowing you to use them safely and confidently. The heater can use multiple fuels: K1 kerosene, diesel # 1, diesel # 2, fuel # 1, fuel # 2, Jet A, and JP-8. However, K1 kerosene is the manufacturer's recommended fuel for optimal, clean combustion, and long-lasting product life. Comfort control thermostat running time, fuel gauge dual source power cord, easy to lift, carry handle, and wire wrapped flameout sensor, sturdy and durable. Color: gray.