AQUACREST Replacement CRF-950Z Pitcher Water Filter, Compatible with Pur CRF-950Z Pitcher (Pack of 4) Delicate design ensures a perfect fit for the original. Optimal performance for up to 2 months, which will vary based on water conditions. Convenience and value Easy to install. For detailed instruction, please kindly refer to the Instruction Manual in the box. Interchangeable with PUR CRF-950Z water filter; For use with PUR Pitcher Filters and PUR 18 Cup Water Dispenser. This filter is not sourced by or sponsored by PUR. The manufacturers name and part number have been used for reference purposes only.