Conserve valuable desktop space & improve the ergonomics of your workstation. High-impact plastic tray holds keyboards up to 20 3/4w x 10 1/8h. Built-in wrist rest features handy cut-outs to hold supplies. Three different height selections for custom comfort. Easy installation with hardware included. Workstation Type: 90 Corner; Diagonal; Straight; Sit-to-Stand Option: No; Height (+/- Desktop): +0" Above to Up to -4" Below; Keyboard Tray Dimensions (W x D): 21.38" x 12.88".