Top grates: Three position cooking grate creates three heat zone for a wide range of cooking temperatures. All grates are in sections to remove easily and safely for cleaning. Slanted cooking surface provides a range of cooking temperatures. Each top grate blade has a cast-in grease trough that allows excess fat to flow to the front grease gutter minimizing flare-up. No tools are needed to remove grates, radiant covers and stainless steel burners for cleaning.