Our mailing boxes are perfect for sample kits & product packaging. Simple glue & tape-free assembly. Made from B-Flute (1/8") corrugated board that is 32 ECT rated. Digital 4 Color process print with interior print optional (for an additional charge). Item is printed flat. Sizes listed refer to boxes' inside dimensions (L" x W" x D"). White surface interior & exterior. Cherry locks & dust tabs create secure closure. Digital die cut, no additional fees. Boxes ship flat & unassembled. Made & printed in USA.