How To Create Shipping Label for Triangle Mailing Box

Shopify Discussion

Topic summary

Users are trying to ship items in USPS Priority Mail triangle/tube boxes but cannot find this packaging option in Shopify’s shipping label creation interface.

Specific Issue:

  • The USPS Priority Mail Small Tube Box (triangular shape, typically used for posters) is available from USPS but not listed as a selectable package type in Shopify
  • Users need guidance on how to generate shipping labels for this specific box format

Current Status:

  • Multiple users have encountered the same problem
  • No solution or workaround has been provided yet
  • The discussion remains open with unanswered questions about configuring this packaging option in Shopify’s shipping settings
Summarized with AI on October 31. AI used: claude-sonnet-4-5-20250929.
1

Hi, Is it possible to ship a triangle mailing box (ie: usually used for posters, etc.)? I don’t see it as an option.

USPS offers it as a priority mail box, but I’m not sure how to create a label for that (or one that isn’t a USPS box) in Shopify: https://store.usps.com/store/product/dual-use-priority-mailpriority-mail-express-small-tube-box-P_O_1098S

1 Like
2

I am wondering the same thing! I can’t find a way to ship that package through Shopify and it’s frustrating.