PUR CRF950Z Genuine Replacement Filter for Pitcher Water Filtration System (Pack of 4)PUR BASIC WATER FILTER REPLACEMENT: PUR's Genuine Basic pitcher filters are certified to reduce 22 contaminants, so you know you are drinking cleaner, great tasting water. All PUR pitcher filters fit in all PUR pitchers and dispensers PITCHER WATER FILTERS: PUR Basic Pitcher filters provide 40 gallons of filtered water, or 1 2 months of typical use, before you need a replacement. Only PUR pitcher filters are certified to reduce contaminants in PUR