JFC001 2 Pack Water Pitcher Filter Replacement Best Quality Activated Carbon Block Filter inside has NSF 42/53 APPROVAL. High Density Filter Mesh, No Sodium Ion Exchange Resin, No Carbon Fines Come to Water Higher flow, better filtration effect, no leakage, 100% water flow through the filter All filters are certified to be free from leaks if properly installed and to function with the latest modifications from the OEM. All components NSF-42/53 certified. Manufactured in an ISO9001 facility. The quality of the filter is better than the branded filter.