26.6kW. Natural gas. Model: G504C/N With two powerful 7kW open burners, a 6.6kW 1/1 GN compatible static oven and a heavy duty 300mm griddle, the natural gas Blue Seal Evolution Series G504C/N is an immensely versatile oven range, suitable for the most demanding of kitchen environments. Perfect for cooking breakfast, lunch or dinner services, the Blue Seal G504C has been designed to be uncompromising in its performance, reliability and safety. With robust precise control dials and heavy duty stainless steel construction throughout, the Blue Seal is easy to use, clean and maintain.