New bbq factory Replacement Ducane 4 Burner Gas Grill 4100 ; Ducane Affinity 4200,4400 Gas Grill Burners,Heat Plates,Cooking Grid;Fits Ducane Affinity 4200,4400 Gas Gril; Fits Ducane 4 Burner Gas Grill 4100 Gas Gril;Burner Dimensions: 18″ x 1″ ; Burner Material: Stainless Steel;Heat Plate Dimensions: 15 3/8″ x 6″ ; Heat Shield Material: Porcelain Steel;Cooking Grid Dimensions: 14 3/8″ x 18″ Each and 28 3/4″ x 18″ Total ; Cooking Grid Material: Porcelain Cast Iron