Professional-Grade Control Knobs Professional Grade Control Knobs Are Designed To Provide You With Pinpoint Precision Control Deep-Well Design Keeps Spills Contained For Easy Cleanup And Lowers The Cooking Surface To Countertop-Level, Which Makes Moving Oversized Pots And Pans Onto And Off Of The Cooking Surface Much Easier. Continuous Grates Designed For Cooking Multiple Dishes At Varying Temperatures On A Single Cooktop. These Grates Allow Easy Movement Of Even The Heaviest Pots And Pans From Burner To Burner - Without Lifting. Perfect Over A Wall Oven Mounts Above A Single Wall Oven For Additional Installation Options. Dishwasher-Safe Grates For Easy Clean Up. Ada Compliant Complies With The Ada Requirements As Specified In The Americans With Disabilities Act.