Tiered Mobile Computer Desk with Pullout Keyboard Tray Overall Dimensions: 39.25''W x 23''D x 56.25''H Main Surface: 39.25''W x 21.5''D x 30.75''H Top Shelf: 25.25''W x 9.5''D x 19''H Side Shelf: 15.75''W x 13''D x 12.5''H Keyboard Shelf: 20.75''W x 12''D x 27.5''H CPU Shelf: 11.5''W x 17''D x 3''H