Note the box style in the product description
Manufactured from 200#/ECT-32 kraft corrugated
Most styles fold together in seconds without tape
All sizes ship flat for easy storage and shipping convenience
hard to pack irregularly shaped items
4 x 4 x 2 White Corrugated Mailers 50/Bundle 12 x 12 box 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.