A Full-Featured Masterpiece Of Cooking Perfection. True Simmer Dual-Valve, Dual-Stacked Burners Reach Way Down To 800 Btus For A Truly Controlled Simmer And Up To 18,000 Btus For A Moisture-Sealing Sear. Inside, A Generously Designed, Self-Cleaning Oven Compartment With A Three-Part Convection System Comfortably Accommodates Commercial-Sized Baking Sheets And Pans.