This sign holder is 7/16 inch thick black styrene plastic with mitered style edges with a slot for inserting notices. The frame has a 12 inch (H) stem and is 3 1/2 x 5 1/2 (H x W). This sign holder has a 4 1/2 x 5 1/2 inch centered base. The kit is simple to assemble and can be used in the vertical or horizontal position. This sign holder is available in a variety of sizes and qualifies for quantity pricing if 24 are purchased at one time.