*This open box product has no visible dents or scratches. Push your culinary limits with the KitchenAid 36" KCGS556ESS gas cooktop. The large cooking area with full-width cast-iron grates makes it easy to prepare large meals for the whole family, and the powerful 20,000 BTU dual-ring burner lets you switch from single flame for simmering to dual flame for boiling without changing burners.