The product is a set of 4 Waten refrigerator water filters designed to fit PWF-1 (FPPWFU01) and (EPPWFU01) models. These filters are made of white plastic and come in a pack of 3 units each, totaling 4 filters in one pack. Suitable for household use, the Waten H2o filters are designed to provide clean and purified water for your refrigerator.