Durable Office Products DBL553937 Desk Reference System 20 Sht Cap. Motion Graphite Desk reference system is ideal for public information areas, shared workstations and high-profile settings. The Sherpa Motion fluidly rotates 360 degrees on a heavyweight base and permits reading angle to be adjusted between 25 and 70 degrees. Included 10 letter-size panels offer 20 viewing sides. Sleeves open on two sides for easy paper insertion. Paper Secure corner clips hold pages safely in place. Desk reference system is made of plastic with a graphite finish and does not expand.