The Star Mfg Y7140 Oven Cast Iron Bottom Grate measures 21" x 17" and features 4 cross bars with 21 ribs. This cast iron grate is used as a bottom support component in compatible commercial oven equipment. Its ribbed surface provides a structured area for cookware while the cross bars add support across the grate. The specification makes it easier to identify the required component when servicing or maintaining applicable Star Mfg equipment. Before ordering, compare the dimensions and grate configuration with your equipment requirements. This component is suitable for commercial foodservice applications where the specified grate size and design are required.