Compatibility: Grill replacement parts for Dyna-glo 4-Burner DGH450CRP DGH450CRP-D Grills Product Packaging: 1 x Diamond Cast Iron Grate, 2 x Cast Iron Cooking Grates, 3 x heat plates, 1 x big heat plates. Heavy Duty Thick for Longer Lasting: 1.Porcelain steel construction, they can withstand high heat from grill and heavy use without rusting or damaging, ensuring long-term durability. Great for prolonging the life of the old bbq grill. 2.Cast iron holds heat effectively and leaves char marks on your food that symbolize deliciousness. Gives food a rich, charred flavor.