Genuine CB11As Multipure Replacement Filter Genuine Multipure solid carbon block filters offer broad performance certifications, superior capabilities, and exceptional quality backed by robust third-party NSF certification. NOTE: Filters will only fit in Multipure units as listed in product details and you need to own one of the systems. We ship to valid US addresses only and do not ship to reshipper addresses. Ensure the optimal performance and lifetime warranty of your Multipure Drinking Water System by always using genuine Multipure replacement filters. NSF-certified to reduce the broadest array of contaminants under NSF/ANSI Standard 42 (Aesthetic Effects) and Standard 53 (Health Effects). Filters contaminants that affect the color, taste, odor, and healthfulness of your water. Developed, produced, and refined in the USA for over 40 years. Compatible with the following Multipure Drinking Water Systems: Aquaperform (MP880, MP880SB, MP880SI, MP880SC, MP88EL).