18 x 18 x 18" 275lb. Heavy Duty Corrugated Boxes that are perfect for shipping all types of products from your business and warehouse Bundle of 20 boxes manufactured 44ECT standards with double wall construction for better protection of your shipping goods Sturdy corrugated shipping boxes that can be stacked easily for you to maximize space in your office, home, and even warehouse All shipping boxes are shipped flat for dimensional shipping and are easy to store in any part of your office or warehouse Boxes that can be assembled easily and can be sealed with packing tape for you to facilitate your packing and shipping process