Platform features a fully articulating and swiveling platform style with a recessed surface, 25 degree platform tilt (15 degrees positive and 10 degrees negative tilt) and 360 degree rotation. Maximum platform height adjustment is 6" below and 1-1/8" above. Keyboard locks into position. Platform offers padded palm rest and fully retractable, steel ball-bearing slide suspension. Sliding 9" wide x 9" deep mouse tray works on either the left side or right side and can be detached and mounted underneath work surface. Required mounting clearance for keyboard is 21" wide x 18" deep.