General Information Knob Adjust Keyboard Tray features a basic knob adjust arm that controls both height and tilt. Gel wrist rest has antimicrobial protection that inhibits the growth of microorganisms, such as bacteria. Keyboard tray has a tilt range of +10/-15 degrees, 360-degree swivel and unlimited positions within height range. Height adjusts 1-1/2″ above worksurface and 4-1/2″ below worksurface. Mouse surface can mount left or right. Keyboard tray is designed for standard workstations that can accept a 17-3/4″ track. Tray is made with a high percentage of recycled material. More from the Manufacturer Product Information Maximum Height Adjustment: 4.50″ – Below Maximum Height Adjustment: 1.50″ – Above Tilt: 10 Tilt: -15 Swivel: 360 Physical Characteristics Color: Black Width: 25.5″ Depth: 12″ Miscellaneous Additional Information: Track length: Short (17.75″) Under-desk width needed 26″ Under-desk depth needed 18.25″ Star-knob adjustment controls height and tilt Maximum height above mounting surface: 1″ Maximum depth below mounting surface: 4.5″ Compatible with shallow workstations where mounting depth is greater than 18.25″ Basic single platform accommodates both keyboard and mouse. 3M Precise Optical Mousing Surface is position-able left or right Gel wrist rests for keyboard and mouse add comfort by minimizing pressure points. Leatherette cover lasts longer than fabric-covered wrist rests and is easier to clean Recycled: Yes Recycled Content: 70% Assembly Required: No Country of Origin: United States Product images may differ from actual product appearance.