The OEM Bankers Box 73301 is a maximum strength specialty box designed to hold eight 1-1/2" binders or most binder sizes up to 3". Its double-bottom, triple-end, and double-side construction provides 85 percent more stacking strength than basic letter/legal boxes. The FastFold One Step Setup makes assembly quick and easy, while the liftoff lid locks into place for secure storage. Built for heavy daily usage, this storage box supports an impressive 850 lb. stacking weight, making it ideal for stacking without shelving.