A grate is an opening of several slits sidebyside in a wall, metal sheet or another barrier, usually to allow air or liquids to enter and/or leave and prevent larger objects from going in or out. In heating, cooling, ventilation, or a combination thereof, a grille is a perforated cover for an air duct. Grilles sometimes have louvers which allow the flow of air to be directed. In cooking, a grate refers to a generally metallic and often cast iron bridge which serves to support pots, pans and other cooking implements on a stove and providing separation and airflow from the heat source. In actual grilling, such as barbecuing, the grill refers to the grate upon which food is placed for cooking. Features. Grate Char Broiler. Made with high quality materialSpecifications. Length 5.85 in / 14.86 cm. Width 20.3 in / 51.56 cm. Height 1 in / 2.54 cm