Thank you for viewing. We look forward to your purchase if you understand the following precautions and are willing to have a smooth transaction. I have other items for sale as well, so please consider them together. This is a set of 5 "Midori Shokai Super 1 L size" heaters. Operation confirmed. 4 in good condition with short usage time. 1 with some scratches and moderate usage time. Thickness 1mm, 30x40cm, 24W The S size heater in the image is included. (It heats up, but has some damage) Precautions: Please purchase with the understanding that these are used items that have been stored for a long time. Please purchase only if you can conduct the transaction smoothly and promptly. In principle, please complete payment within 24 hours of completing the purchase process. We do not offer layaway. We do not respond to questions or negotiations after purchase. Please understand that the packaging will be as small and simple as possible. If you intend to rate us based on issues caused by the shipping company's handling, please refrain from purchasing.