Counterfeit water filters continue to be shipped to the U.S. with the intent to sell to consumers, see article by CBP: HERE These type of filters are not tested and certified like the real thing, see
Read full article by Frigidaire at: https://www.frigidaire.com/Filters--Accessories/Filters/Water-Filters/Genuine-Water-Filters/Spotting-Counterfeit-Water-Filters/