Unopened and unused set of two HGC9SZ filter cartridges for the Cleansui CSP series. The box shows signs of wear. I purchased these for storage, but I am selling them because I can no longer use a Cleansui water purifier due to a move. Purchased in April 2024 via Yodobashi.com. *Please see the product photos for details. *Please only purchase if you understand that this item has been stored at home. *No claims or returns accepted.