20 x 20 x 4 Brown Corrugated Deluxe Literature Mailers 25/Bundle trending Note the box style in

Note the box style in the product description

Multi-Depth Bookfolds

Sold and shipped flat in bundle quantities

and Jumbo Fold Over Mailers

All styles are approved for shipment of your product using Post Office (USPS)

20 x 20 x 4 Brown Corrugated Deluxe Literature Mailers 25/Bundle trending Note the box style inAll 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.