Tremron RW03800W3220T 4" x 8" x 12" Sand Dune Tumbled Munich Wall, available in two different shapes and sizes, Munich wall blocks are simple and flexible. With a seemingly endless variety of installation options, such as custom mailboxes, fire pits, seating walls, ponds, planters, and raised gardens. Further enhancing their beauty, each block is tumbled to create a natural, antique finish.