Amazon-style cardboard envelopes with expandable side gussets that can be dispatched flat as a rigid envelope, or simply popped out into a cardboard box. Also known as postal M-folders, book boxes or capacity mailers, these cardboard postal cartons offer sturdy but lightweight protection to contents and are popular with e-commerce retailers of all sizes, including Amazon. Made from 100% recyclable corrugated cardboard, with adjustable width, length and depth to suit contents.
There are 4 sizes/products in this category:
Some of these products appear in other categories, see also:
