Mitsubishi Chemical Cleansui This is the MDC01SZ water filter replacement cartridge for the MONO series. This listing is for two unused, unopened cartridges from a value pack (3 + 1 promotional item). Product Condition: * Cartridge body: Unused, individually sealed * Outer box: Has some scratches and folds due to storage * Long-term storage (stored in a dark place) ※ The sticker for writing the start date of use is still attached. ※ Please understand that this is an unused item that has been stored for a long time before purchasing. Features: * Removes 13 + 2 substances (SUPER HIGH GRADE) * Estimated usage: Approximately 3 months per cartridge * Compatible with Cleansui MONO series Important Notes: * Please check the manufacturer's official website for compatible models. * Returns and exchanges are not accepted to prevent product tampering. We will carefully package and ship promptly.