Brand new pack of 3 This is an EcoAqua EFF-6045A refrigerator water filter, a cost-effective alternative compatible with Samsung DA97-17376B. Filter Life: For optimal performance, the manufacturer recommends replacing the filter every 6 months or 300 gallons, whichever comes first. Contaminant Reduction: This filter uses a high-grade coconut shell activated carbon block to reduce chlorine taste, odor, and other common contaminants.Certifications: The filter is tested and certified by NSF International against NSF/ANSI Standard 42