There are four-burner, three-burner and portable Thermos gas grill models that are manufactured by the Char-Broil company as of 2015. They are all constructed with stainless steel. The four-burner model outputs 48,000 BTUs of heat from the main burners and has more than 600 square inches of cooking space.
Both the four-burner and three-burner models have side burners that each output 10,000 BTUs. The three-burner model has an electronic ignition and more than 400 square inches of cooking space.
The portable model has almost 200 square inches of cooking space and porcelain-coated, nonstick grates. It has one burner that heats up to 11,000 BTUs, and it has two removable legs.