Sturdy, stable and easy to adjust. Ensures comfortable, ergonomically correct viewing with six-way infinite adjustability. Attaches to either side of computer and swings out of sight when not in use. Unique sliding clip design and grooved ledge keep up to 150 sheets of paper securely in place. Available in standard size 9 x 11.5 in. (22.9 x 29.2 cm) and universal size 11 x 11.5 in. (28 x 29.2 cm).