Freight Class 55
The exact density band, calculation check, and neighboring classes for density-rated class 55 LTL freight.
Freight class 55 covers 35 to under 50 lb/ft³on the standard density scale. That is density-based guidance for US LTL freight; confirm the commodity's current NMFC item before booking.
Check your actual shipment
Enter the packed dimensions and weight to calculate density automatically.
What class 55 means
Class 55 sits in the very dense part of the LTL scale. Density is total packed weight divided by total packed cubic feet. A higher density normally moves freight toward a lower class; a lower density moves it toward a higher class.
Density band
35 to under 50 lb/ft³
48 × 40 × 48 in pallet
1,867 to under 2,667 lb
At 53.33 ft³ total volume
The pallet example shows the weight range that produces this density band at one common pallet size. It is a math example, not a trailer payload recommendation; confirm real equipment and axle limits.
Why the carrier's class can differ
NMFC classification can account for more than density. A commodity may have a fixed class or a density sub-provision, and handling, stowability and liability can change the official item. Use this page to sanity-check the density band, then verify the current NMFC item with the carrier or broker quoting the shipment.
Frequently asked questions
What density is freight class 55?
Freight class 55 covers 35 to under 50 lb/ft³ on the density scale for density-rated freight.
Is class 55 guaranteed from density alone?
No. Density is guidance for density-rated freight. The official NMFC item can also depend on commodity, handling, stowability and liability.