Double Stackable Codes by Carrier
Freight may be double-stacked in the trailer.
1 code across 1 carrier.
No match. Search every service →
Numark Transportation
dblstack
on booking
doc
Shipments
A handling flag rather than a billable service.
Common questions
Which carriers support double stackable?
1 carrier publish a code for double stackable. Freight may be double-stacked in the trailer.
Is there a standard double stackable code across carriers?
No. Each carrier defines its own code, so the same service is spelled differently at every carrier you integrate with — Numark Transportation uses dblstack. A code is only meaningful together with the carrier it belongs to.
Need this programmatically? /api/accessorials/map?service=double-stack returns the same data as JSON on every plan.