When using Shiptheory, some carriers allow you to specify custom package dimensions when sending orders. This allows you to send them more detail about the orders being shipped.
Please see the list of carriers that support this functionality below;
- CSM Logistics
- The Pallet Network
For some more information about how this functionality works, please see this guide here: Using Package Sizes
If you have another carrier you use with Shiptheory that you want to specify custom package sizes with, please let us know as we can then look to request this with our development team.