This sign holder has a sturdy 4 1/2 x 5 1/2 inch shovel base that is ideal for end caps and bulk displays and when used underneath product containers has even more stability. The frame is a durable high impact black styrene plastic with mitered style edges. This sign holder is 11 x 14 (H x W) and 7/16 inch thick. The enclosure kit can be used both vertically and horizontally and has a slot opening that makes it easy to insert notices. This sign holder is quick and simple to assemble.