Porcelain cast iron R cooking grid, to be used with Regal I drop-in grill. Fire Magic Porcelain Steel Rod Cooking Grids For Regal 1 & A540 Grills. Gives your meat and vegetables the perfect sear marks every time. Porcelain Steel Rod cooking grid To be used with Regal I drop-in grill Specifically designed for Fire Magic grills Gives your meat and vegetables the perfect sear marks every time