Covers PPF951K、CRF950Z、PPF900Z、PPT700W、CR-1100C、DS-1800Z、CR-6000C、PPT711W、PPT711、PPT710W、PPT710W、DSCR111010、DSCR111010000 PPT711B. The specific lifespan may vary based on water quality. To maintain water purity, replace the filter promptly when the filtration flow rate decreases.