Boxes Fast is your premier source for all of your corrugated needs! With over 1,600 corrugated box sizes available, our huge selection ensures you can choose the right size box for any application. Corrugated box assortment has many styles to choose from including standard, flat, tall, heavy-duty, double wall, triple wall boxes and much more! Check out the store for a full selection of corrugated boxes!>>Product Specifications: 20 x 18 x 12" Corrugated Boxes. Inside dimensions measure 20-inches (length) x 18-inches (width) x 12-inches (height). Carton capacity is approximately 2.5 cubic feet. Free 10 Red Fragile 2" x 3" Shipping Labels, "Please Handle With Care, Fragile, Thank you". Corrugated boxes are great for packing, shipping, moving, storage, crafting and much more! These boxes are the industry standard and proudly made in the United States. Corrugated boxes are easy to assemble and fold together in seconds. Standard strength industrial corrugated boxes are manufactured from 200#/ECT-32 single wall, c-flute kraft corrugated. Estimated weight capacity is 65 lbs. (This is only a guide, weight must be distributed evenly). PACKAGING: Package includes 10 boxes and ship flat to save on storage, space and shipping. Corrugated boxes are reusable and recyclable.