The Produce preserver absorbs ethylene allowing the ripening process of many produce items to slow down. As a result, certain produce items will stay fresh longer that are kept in your crisper drawer. It extends freshness of produce up to 25%. This kit includes a produce preserver housing, 2 replacement filters and 1 status indicator which will be put in the housing in your crisper drawer. The status indicator helps you remember to change the pouches. Replace pouches and status indicator every six months for optimal freshness. Replacement filters are item number W10346771A.