The sign frame has a 4 1/2 x 5 1/2 inch shovel base on a 4 inch (H) stem. This holder is 7/16 inch thick high impact black styrene plastic with mitered edges. The sign frame is 7 x 11 (H x W). This kit works in both the horizontal and vertical position and is quick and simple to assemble. The sign frame has a slot opening for easily inserting informational notices.