【Product Details】Compatible Models: JF-22 Size: Approximately 116*28mm Materials: Activated carbon, non-woven fabric 【Regarding Replacement】Replacement目安: Approximately 3 months. *The replacement timing varies depending on water usage, water quality, water pressure, etc. Please also replace with a new cartridge in the following cases: ① The amount of "purified" water has decreased. ② There is an unpleasant odor or taste. ③ It has not been used for a long time. I purchased this new from the official LIXIL website, but I no longer need it, so I am selling it at a reduced price from the regular price.