Thank you for viewing. This is one HGC9S CSP series cartridge for Cleansui water purifier. I purchased this as a spare and stored it, but I am selling it because I changed water purifiers. Includes the main unit, instruction manual, and original box. CSP series, super high-grade type. Please check image 3 for performance details. Please check image 5 for compatibility. The original box has some scratches and dirt, but the cartridge inside is unopened and unused. I look forward to your consideration. Please ask any questions in the comments. Please forgive any display errors or oversights. Everything will be based on the actual item. Shipping is planned via Yu-Packet Plus. Due to size constraints, the original box will be folded and placed in a separate box from the main unit. Thank you for your understanding.