Our 20" x 14" x 8" 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 20" x 14" x 8" shipping boxes are made from 200 Pound test, kraft C-flute single wall corrugated carton. Our standard boxes are designed for shipping or storing large-size items.