Profile: First Packaging of Chicago specializes in the custom design and fabrication of corrugated, cardboard, shipping & die cut boxes. Our corrugated shipping boxes are available in 17X17X12, 48X24X24, 36X36X18, 16X12X4 and 15X12X10 sizes. We also have in-stock used Gaylords/bulk boxes. Our protective corrugated mailers are die cut corrugated boxes manufactured from ECT32 B/200# B flute singlewall oyster, white corrugated. These fold together quickly setting up in seconds. Stock corrugated mailers are strong and light-weight cardboard boxes to save on postage. We also have in-stock corrugated shipping boxes, side loading boxes, corrugated bookfolds, square corrugated, triangle, mailing and caulking tubes. Our plastic bags include pallet cover bags, Gaylord liners, mattress bags, bin & carton liners and shrink bags. We also have many other types and styles of plastic bags & film products.