Features corrugated box dividers that provide three 5" compartments to prevent files from falling over. 85 % stronger than basic letter/legal boxes for reliable box performance. Double bottom, triple end, double side construction. Reinforced hand holes resist tearing and make box comfortable to carry. Withstands 850 lbs of stacking weight. Letter size. 12"W x 15"D x 10"H. 60% recycled content. 50% post-consumer content. Easy FastFold on step set-up. SFI certified.