Genuine Multipure solid carbon block filter – performance certifications, superior capabilities, and exceptional quality backed by robust third-party NSF certification. 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), Standard 53 (Health Effects), and Standard 401 (Emerging Compounds). Filters contaminants that affect the color, taste, odor, and healthfulness of your water. Developed, produced, and refined in the USA for over 50 years. Save 15% by signing up for our auto filter reorder program. Compatible with the following Multipure Drinking Water Systems: Aquaversa (MP750, MP750SB, MP750SI, MP750SC, MP1200EL, MPCT, MPSSCT, MP500 series). WILL NOT fit CBVOC/Liberty units. NOTE: Filters will only fit in Multipure units 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. If you have not ordered from us before, we will contact you to verify unit you own due to our 30% restocking fees on all returns we have on Amazon. Returns: subject to restock fees plus shipping cost.