LIXIL・INAX Replacement Water Purifier Cartridge [Long-life, High-grade Type] ・Part Number: JF-K22 ・Quantity: Set of 2 ・List Price: ¥6,490 x 2 = ¥12,980 *This product is the long-life version of JF-22. ------------ This is compatible with most INAX/LIXIL water purifiers integrated with faucets (where the cartridge is inside the faucet). However, please note that the following are not compatible: [Water Purifier Cartridges] ・JF-K1 series ・JF-K4 series ・JF-31 ------------ *Replacement Guide 　5+ person household: Approx. 2 months (20L/day usage) 　3-4 person household: Approx. 3 months (13L/day usage) 　1-2 person household: Approx. 4 months (10L/day usage) ------------ New and unopened. Purchased through official regular subscription. Selling because the water purifier unit was replaced and these are no longer needed.