White C6 Postal Packaging - Outer Box Only - 190x140x35mm PK of 10 NEW white C6 Postal packaging pk of 10 £5.50 Out of stock. White postal packaging boxes sturdy for posting. Supplied flatpacked. Ideal for shipping cake sample packaging, brownies, large cookie box, chocolates, gifts and more. 100% recyclable. Shredded paper sold separate.