The red box that the arrow is pointing to shows where you can find the current article number for a product on the page. The green box shows the code for the finish itself (in this case, SB). Since we have multiple suppliers, the article number may appear differently depending on the product you're interested in. On some products, the finish is located in the middle (as shown in the image), while on others it is at the end of the article number.What is particularly important when matching products, such as handles with knobs, is that the products have the same finish code. That means: If a handle has the finish code MB (Matt Brass), the knob must also have the same finish code to ensure the products have the same shade. If you buy handles and knobs with different finish codes, i.e. from different suppliers, we CANNOT guarantee that the products you receive will have exactly the same shade, even if both products in the item name say "Brass." The same applies to door handles, hooks, and other products.If you have any questions about this or need help finding the right products, you can always contact our customer service at info@decorroom.eu.