The sign holder is 11 x 7 (W x H) with and 8 inch (H) stem. This enclosure attaches to wire or any flat vertical surface with the 3 1/2 x 1 5/8 (W x H) clip mount. The sign holder is black 7/16 inch thick durable styrene plastic and has mitered style edges for a finished appearance. This frame kit has a slot opening for easily inserting informational notices and it is simple to assemble. The sign holder works either vertically or horizontally so you have more signage options.