The LifeDesk Keyboard Tray is a great solution for worksurfaces that are improperly sized for the user. This tray drops 5" below the worksurface, raises up to 3" above the worksurface and the tray has a variable angle adjust, from -15 degree (downward) tilt to 10 (upward) tilt. The standard tray is 26" long, 1 piece construction allowing for same plane keying & mousing. Mousing surfaces on both the left or right give flexibility and variability. Other tray lengths (19", 30") are available. Standard track is 21" long and allows for full retraction of the board under the desk. Comes with a 19" Gel Palm rest