Viking Professional 30" freestanding dual-fuel range. As every cook knows, perfection is a never-ending process. The dual fuel sealed burner range is proof of that. From the delicate VariSimmer™ setting to the 15,000 BTUs, available on all four burners, this is the most precise and powerful sealed burner system available. The redesigned range also offers the largest oven capacity and one of the fastest preheat times on the market.