Protect your belongings from external damage while transporting with the Partners Brand 853 3" brown corrugated boxes. It is made of corrugated cardboard that is sturdy enough to store different kinds of equipment and daily household items. Its rec tangle shape ensures that it offers the best fit for your item. This mailer measures 3"H 8"W 5"D in size. It is shipped and stored flat to save space. Corrugated Boxes are manufactured from 200lb /ECT 32corrugated. Brown coloredcorrugated construction. Dimensions: 3"H 8"W 5"D. Capacity: 0. 069 cu. ft. Pack Size: 25/Bundle. The Partners Brand 853 3" brown corrugated boxes protects your stored items from external damage and offers an ideal choice for shipping.