All sizes shown are the inside dimensions of the box (in inches) and are in the following order: Length
fold in the sides at your desired depth and seal with tape
All sizes ship flat to save on space
literature
All styles are appoved for shipment of your product using Post Office (USPS)
13 x 10 x 4 Brown Corrugated Literature Mailers 50/Bundle 12x12 box All sizes shown are theAll of these Indestructo corrugated mailers boxes are designed to create a professional appearance for shipment of your catalogs, literature, parts, photos, printed material, etc. Note the box style in the product description. Choose from six styles: Standard Protective Mailers, Outside Tuck Mailers, RSC Boxes, Multi Depth Bookfolds, End Loading Mailers, and Jumbo Fold Over Mailers. Most styles fold together in seconds without tape, glue or staples.