The HDX Water Pitcher Replacement Water Filter Cartridges are BPA free and compatible with Brita pitchers. This 16-pack includes 4 cartridges with a capacity of 40 gallons each, designed to remove chlorine taste and odor through activated carbon and ion exchange filtration. Made of plastic and suitable for both commercial and household use, these cartridges are a convenient and effective way to ensure clean and fresh water for your household.