Bankers Box Heavy-Duty Storage Boxes Letter/Legal Size Ideal for filing, moving, and storing 850 lbs. stacking strength - 85% more than basic-duty boxes. Durable, Triple End/Double Wall Construction. Fast Fold for quick and easy assembly. Set up 4X faster than basic boxes Handles are reinforced, and tear resistant 60% recycled content. Sustainable Forestry Initiative Certified Sourcing. Made in the USA Ideal for filing, moving, and storing Fast Fold for quick and easy assembly. Set up 4X faster than basic boxes Handles are reinforced, and tear resistant 60% recycled content. Sustainable Forestry Initiative Certified Sourcing. Made in the USA