Agreat way to organize books in a classroom or library, especially small books that are hard to place on shelves. Keeps books neat, easy to see, and provides easy access for small hands. Features removable bokk tubs (15''L x 12''W x 6''D). The metal frame has a tough, powder-coat finish and four locking casters for safety. Top and middle rows can be assembled so tubs sit on an angle, making it easier for small students to see what's inside. 10-year frame warranty, lifetime tub warranty. Assembly required. Includes 6 large Divided Tubs and 3 Open Tubs. 40 1/2''W x 15 3/4''D x 36 1/2''H.