Vortopt Sink Water Purification Filter, Tap Water Filtration System -NSF/ANSI 42 Certified Water Purifier, Water Purifier, 19, 000 Gallons Of Large Flow, Reducing Perfluorooctane Sulfonic Acid, PFOA/ Perfluorooctane Sulfonic Acid, Chlorine, Odor, Directly Connected To The Kitchen Faucet, Q5-C2 Model Comes Standard With 1 Filter Element