YAMAZEN Replacement Antibacterial Cartridge Part Number/Model Number: MZ-KC2840 Manufacturer: YAMAZEN Compatible Model: MZ-FT40 Replacement目安 (Guide): Approximately 6 months (When operating for 8 hours a day) New, Unused Purchase Date: 2025/1/14 I am selling this because I purchased it by mistake. It is new and unused, but it has been stored at home, so please consider this before purchasing.