The 2 and 4 qt Camwear® Round Cover (RFSCWC2135) is designed to fit the 2 and 4 Quart Camwear food storage containers. The durable polycarbonate construction makes this lid practically unbreakable, and it is stain and odor resistant. Be assured that this long-lasting lid is designed with freshness and food safety in mind. It is tight fitting and will keep contaminants where they should be: away from food. This Cambro lid is able to withstand temperatures from -40 to 210 degrees Fahrenheit, so a wide range of applications is possible. Lids are NSF certified and made in the USA.