Adjustable Keyboard Platform conveniently tucks away under desk when not in use. Single knob offers simple height and tilt adjustment to ensure comfort and proper ergonomics. Allows in-line mouse use on the left or right side. Height adjusts 5 (1 above desk). Durable wood fiber platform with foam wrist rest. Color: Black; Workstation Type: Curved; Diagonal; Straight; Height (+/- Desktop): +1 1/2"/-3 1/2"; Keyboard Tray Dimensions (W x D): 25" x 9 1/2".