The sign frame is 8 1/2 x 11 (H x W). This holder is 7/16 inch thick black high impact styrene plastic with mitered style edges. The sign frame has a slot opening that makes it easy to insert your notice. This kit includes two 1 3/4 inch (D) suction cups and mounting clips to attach to glass and other smooth surfaces. The sign frame is quick and easy to assemble and can be used in either a horizontal or vertical position.