Repositionable, reusable, self-adhesive sign holders help administrators & teachers quickly & easily post & update signs on any wall, window, or solid non-porous surface without using any hardware or leaving sticky residue. These reusable sign holders let you switch messages in a flash & can go just about anywhere. Because they could be stuck easily to just about any flat surface, these sign holders are perfect for retail stores, government offices & anywhere the public gathers. Frame Color: Clear with Red Border; Size: 13 x 19; Insert Size: 11 x 17; Material(s): PVC Film.