The measurement "16x20 inches" refers to a rectangular area that is 16 inches wide and 20 inches tall. This size is commonly used for various items, such as photographs, posters, and art prints. It provides a balance between being large enough to display details while still being manageable for framing or hanging. In terms of surface area, a 16x20 inch rectangle has a total area of 320 square inches. This size is popular in both home and office settings, making it suitable for wall art or educational materials. It can fit well in standard frames designed for this dimension.