This Value Series PLFS7130 is a hi-heat silicon flexisil lid that fits 1/3 size pans. The re-usable lid is designed to reduce the use of plastic film wrap and aluminum foil. Reusable hundreds of times. The lid minimizes cross-contamination, locks in freshness, and can be frozen up to -40° F & cooked with up to 428°F. Fits plastic, melamine, and stainless steel pans. NSF Listed.