The perfect heat conductor, Napoleon's Porcelainized Cast Iron, Hinged Cooking Grids contain and conduct heat perfectly for the best high heat searing on a charcoal grill. Hinged for your convenience, it's easy to add extra charcoal when grilling low and slow, or slipping in some extra wood chips and chunks for even more smoked flavor. Easy to maintain, these cooking grids season just like your favorite cast iron pan. With proper maintenance these cooking grids will last for a lifetime, just like a cast iron frying pan.