Free up space on your desk and easily move your LCD monitor into the best ergonomic position. Contains a minimum of 45% post-consumer recycled material. Monitor can rotate portrait or landscape. For monitors up to 20 lbs. Clamp and grommet mounting included. 5-year limited warranty. Dual Arm. Height adjusts up and down through a 12-3/4? range. Swivels 900 degrees and tilts +55/-90 degrees.