Maximum Heat Is Delivered By The Upper Tier Burner For More Rapid Boils And Hotter Sears. The Low Flame On The Lower Tier Burner Eliminates The Need For A Double Boiler Completely, And Keeps Even Delicate Sauces Warm Without Fear Of Scorching Or Separating. Convection Fan Circulates Gas Heat Within The Large Capacity Oven To Eliminate "Cold Spots" And Ensure More Consistent, More Delicious Results - Even When Using Multiple Racks At Once. Control Temperature Precisely With FourControl Temperature Precisely With Four Dual-Stacked, Sealed Gas Burners For Higher Highs, Lower Lows Rely On A Double 30000 Btu InfraredRely On A Double 30,000 Btu Infrared Double Griddle To Sear Burgers, Stir-Fry Vegetables, And More Enjoy Quicker HeatEnjoy Quicker Heat And More Even Cooking With This Large Capacity Gas Convection Oven Multi-Task With An Additional 18 OvenMulti-Task With An Additional 18 Clean Up SloshesClean Up Sloshes And Spills Easily With The Seamless, Sealed, Black Porcelain-Coated Burner Pans Produce Crisper CrustsProduce Crisper Crusts And Faster Sears With The Powerful Infrared Interior Broiler Re-Ignites Flame AutomaticallyRe-Ignites Flame Automatically With Our Spark Ignition System For Improved Temperature Control And Added Safety Move Pots And Pans - Cast IronMove Pots And Pans Easily Across Continuous Cast-Iron Grates Find Your Kitchen StyleFind Your Kitchen Style With A Choice Of Iconic Red, Black, Or Brushed Stainless Control Knobs Rangetop Specifications(Ul)(Li)1 - 9,200 Btu Burner(/Li)(Li)3 - 15,000 Btu Burners(/Li)(Li)1 - 30,000 Btu (26,000 Btu Lp) Double-Wide Griddle(/Li)(/Ul)