Four replacement lids designed to fit Corningware 2.5-quart round dishes with the FS-1 model number. Made from BPA-free plastic that is safe for use in the microwave, refrigerator, and freezer. The snug-fitting lids help keep food fresh by preventing odors from seeping in. They can be cleaned in the top rack of a dishwasher for easy maintenance. Ideal for replacing worn or lost lids in any kitchen with Corningware cookware.