Thank you for viewing. I have cleaned it, but there is some dirt from use. The earth wire is cut in the 18th photo. It warms not only from the top, but also from the bottom. I have confirmed that it warms both the top and bottom. There are power switches, one each for the top and bottom. Since there is no description of the year or model number, I do not know the details. Please check the condition in the photos and purchase if you are satisfied. Everything in the photos will be sent to you. To prevent trouble, please refrain from purchasing if you feel even slightly uneasy, if you are looking for a perfect product, or if you are concerned about the condition of the product. I try to explain the condition as clearly as possible, but there are individual differences in expression and perception, and there may also be oversights. Please consider purchasing after understanding that it is a used item. You can purchase this product immediately. The estimated shipping date is listed in my profile, so please take a look and purchase if you agree. This product will be packed with air caps (bubble wrap) and shipped. Please understand. We are also waiting for your consideration and inquiries. Also, I regularly list various items. Please take a look at my other listings! Following is also welcome!! Thank you. For business use Insulation Heater