Ideal for upgrading or replacing cooking grids with this set of two Porcelainized Cast Iron Cooking Grids for the Freestyle 365 Gas Barbecue Grill. This replacement contains a pair of cast iron cooking grids. Cast iron holds heat and provides the best searing on a grill. Properly maintained and seasoned cast iron is nonstick and highly durable. To confirm that you are purchasing the correct product, refer to your product manuals parts list.