3-Dimensional Letters 3 Dimensional graphics are made from a variety of materials; Aluminum and Acrylic (plastic) are the two most common and can be finished with an almost unlimited range of colours and metallic options. The most popular finish options include colour match to you company Pantone reference and the classic brushed aluminum finish. 3D Graphics can be mounted on any solid interior or exterior wall. Pin mounting allows for spacing between the wall and the letter to add even more depth to the graphics.