This product is an "unused item that has been opened." It is a new, unused item that has only had the box opened. There may be some scuffing on the outer box from storage. The filter is already installed on the main unit. ~Regarding the product's outer box~ ※1. Please consider the product's outer box as packaging material to protect the product during transportation. ※2. Please be aware that there may be scratches, damage, or crushing on the outer box. ※3. The condition of the box may not be fully captured in the photos. ~Regarding price negotiations~ We will respond within reasonable limits. Please present your desired price first. We appreciate it more than standard phrases or comments like "How much can you lower the price?" Please note that we cannot be held responsible for shipping-related issues (water damage, crushing, tearing, or damage). If any issues arise during shipping, please contact the administration directly. Please be aware that if you complete the transaction without doing so, you may not be able to receive compensation from the administration. We want to avoid any problems during the transaction. Therefore, please feel free to ask any questions in the comments section before purchasing. Also, please refrain from purchasing if you are seeking perfection in a personal transaction or if you are overly sensitive to minor imperfections.