3M-TRAY,KEYBOARD,ADJUST,BK. Sit/Stand Easy Adjust Keyboard Tray, Black. Unique system keeps keyboard and mouse in position during adjustment or storage of trays. Independent mouse platform is height and tilt adjustable and can be mounted right or left. Patented leatherette gel wrist rests for keyboard and mouse. Precise™ optical mousing surface. Cord management. Offers the maximum in ergonomic adjustability and comfort. Color(s): Black; Keyboard Tray Dimensions (W x D): 19 1/2" x 10 1/2"; Mouse Tray Dimensions (W x D): 7" x 9 1/2"; Height (+/- Desktop): +10"/-4".