This is a flat pan that has moderately sized ridges spaced evenly across the bottom that closely resemble an outdoor grill surface. They can be used like a frying pan for grilling meats, fish, and vegetables. The ridges raise the food off the bottom surface of the pan, which helps prevent the food from steaming as it cooks. The ridges also serve as a method for allowing the fat contained in some foods to drain away from the food and collect in the spaces between the raised ridges. Many materials are used for making stovetop grill pans but those made of cast iron are considered the best because it retains heat more consistently. These pans are available in round, square and rectangular shapes and range in size from 9 to 12 inches. There are also double burner sizes available. If you have any questions about products please feel free to Call Us Toll Free (800) 958-0841 at any time!