Great value! There are no noticeable stains or other issues. There are multiple photos. Please take a look. If needed, I will take photos of any areas you are concerned about. (The filter shows some signs of use.) *I am open to some price negotiation. However, I will not respond to comments solely for the purpose of price investigation. Please provide a specific price when negotiating. I will not answer questions like "How much lower can you go?" Thank you for your understanding. *Since I don't have the original cardboard box, I will prepare one and use bubble wrap as cushioning for shipping. This is a reused item, so please understand that it is sold "as is" with no returns. Includes instruction manual and remote control (unused). Almost new, unused condition. However, as it is a used item, there is no manufacturer's warranty. Product Description Video https://vimeo.com/454240722 Made by Tamuratec, the only medical device ozone generator manufacturer in Japan. Color: White Weight: 10.5kg Product Dimensions: W400 x D240 x H680mm Applicable Area: 100㎡ Retail Price: 305,800 yen Maintenance is simple: approximately once a month, remove dust from the filter with a vacuum cleaner or brush, and wipe off any white deposits around the ozone generator with a cloth! You are free from daily maintenance such as washing with water or replacing water, unlike other models. Can be used in hospitals, pharmacies, hotels, offices, large living rooms, banquet halls, and halls. This is the top-of-the-line model with high air purification and ozone sterilization/deodorization functions. High-concentration ozone is used in environments without people for thorough sterilization. Low-concentration ozone can be used in environments with people, sterilizing slowly over time. As a measure against hay fever, it decomposes and removes pollen. This is a must-have item for those with hay fever during the upcoming pollen season. It can also be expected to repel pests. (Cockroaches, bed bugs, etc.) Type: Ozone Sterilization/Deodorization Machine Maximum Applicable Floor Area (Air Purification): Approximately 10 to 60 tatami mats Replacement parts are a HEPA filter and activated carbon filter set for 19,800 yen (tax included). The UV lamp is 9,900 yen (tax included). The manufacturer recommends replacing each after about 1 year of use. *If necessary, I can replace the filters before shipping after prior consultation. (In that case, the above parts cost will be added.) *The shipping label will be affixed to the outer box when shipped.