Replacement cast iron cooking grid. Approximately 19 inches by 25 inches and 19-1/8" x 12-3/8 total size.
Brinkmann, Charbroil, Charmglow, and Sams Club Brand BBQ Gas Grills. See model list below.
Some of the best aftermarket parts available for gas grills with great reviews.
Gas grill models using cast iron cooking grid or grate part number 66662: