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Mailing Boxes For Sale. Custom Printing. Low Minimum. Free Shipping.


Tuck-In-Flap Mailing Boxes

U-Pack Tuck-In-Flap Mailer Boxes

U-Pack's Tuck-in-Flap boxes with double sidewalls and extra locking flap on lid panel are extremely sturdy and safe as e-commerce boxes online. They ship flat and are quick and easy to construct manually without glue or staples. These boxes are used for a variety of application ranging from gift kits, baby products, electronics, cosmetics, mobile boxes and more. UPack stocks these in various sizes in natural brown and white kraft paper.

  • Strong and lightweight – easy to assemble
  • Die cut finishing & custom printing options.
  • Ships flat for easy handling and storage
  • In stock and available for immediate delivery