Stacking Bookshelf G6431 Display your favorite books, CD?s and DVD?s on these sturdy, stackable shelves! Crafted from heavy duty birch with a natural satin finish, these versatile shelves will provide that extra storage space every classroom needs! Use together or separately. Includes two shelves. Adult assembly required. Made Of: Birch plywood Dimensions: 24 W x 12 D x 18 H.