Our 16.25" x 12.25" x 9.3125" 200#/ECT-32 Standard-size corrugated boxes are designed to cater to all of your shipping and storage needs. The rigid cardboard construction protects contents and stacks securely. These 16 1/4 x 12 1/4 x 9 5/16 shipping boxes are made from 200 Pound test, kraft C-flute single wall corrugated carton. Our standard corrugated boxes are great for shipping or storing cylindrical, round or large-size items.