Book Boxes, 4″ Wide, Set of 20 with Labels

Easy to assemble 4″w x 4-½″h x 12″d cardboard boxes for storing books by levels, with numbered labels 1-20. This set has 1 box for each level in the RR program; use extra boxes for storing unleveled books for RTK, or for levels with more books than will fit in 1 box. Plain white, so you can decorate it as desired. Shipped flat.