A total ergonomic unit. 41w x 29d worksurface adjusts pneumatically from 29" to 39" at the touch of a finger for sitting or standing. Top printer shelf 25-1/2w x 11-3/4d, bottom CPU shelf 10w x 19-3/4d. 20w x 11d keyboard shelf tilts from +22.5Â°/-15Â° and can raise 1" above or 4" below worksurface. Independent, articulating mouse platform for right- or left-hand use. Teak finish laminate tops with silver steel base. Top and Base sold separatelyâ€”ORDER BOTH.