The wall mount sign holder is 8 1/2 x 11 (W x H) standard letter size. This acrylic sleeve is held by two 1 inch strips of Velcro® for easy placement and removal. The wall mount sign holder lies flat on any smooth surface. This case helps keep signage clean and neat while still providing complete visibility of the message inside. The wall mount sign holder is easy to use just slip the paper in between the front and back cover.