Basic-duty storage box with liftoff lid is designed for light-use and frequent access to your letter-size files. Small size eliminates heavy lifting and uses less space in your office, home or trunk. The storage box is 20 percent lighter when full than a standard storage box. Box offers a 400 lb. stacking weight (evenly distributed) and double-bottom, double-end, single-side construction. Liftoff lid comes attached to prevent loss and then tears off for use. Storage box contains a high percentage of recycled material.