The baseboard size is approximately 3.2/1CM, and the wall thickness is approximately 1.2MM. Please refer to the photos for product size questions. I will not answer questions. As this is a handmade product, there may be some slight variations, please understand. Copper products will oxidize over time. The color may change slightly. Please check the images carefully. Please confirm the images, size, etc., and make your purchase at your own discretion. We may not be able to accurately convey the condition and size of the product. Please understand. Regarding the size, it is measured and photographed by an individual, so please understand. We do not accept cancellations after purchase, so please be careful when purchasing. We do not issue receipts, so please understand.