Safco 58 Inches High Capacity Desk Top Organizer, Medium Oak (3651MO) Two full width fully adjustable shelves and top. Constructed of furniture-grade compressed wood with a high-grade melamine finish Solid wood top, and finished fiberboard back. Unit is 12 Inches deep and includes eight 3-3/4 Inches shelf dividers that adjust in 5 Inches increments Three 11-1/4 x 16 Inches literature trays that can be mounted on the left and right-hand side.