Whether your belongings are on the move in the mail or headed for storage Duck Brand Heavy Duty Kraft Boxes are reinforced with double-wall construction for added strength so even your heaviest items hold up making it a must-have box for packing up areas of your home like the kitchen or bulky items in the garage. Every box is also made up entirely of recycled content so you can go green wherever you go. Plus longer-lasting boxes mean you can reuse them over again. Box/Tube: Box Box/Tube Design: Regular Slotted Container RSC Length: 18 Width: 18 .