Freight Class 55 — Density Range, Examples & Calculator

Freight class

Density range

35–50 lb/ft³

Class 55 covers freight with a density of 35–50 lb/ft³. Typical examples: bricks, cement, mortar, hardwood flooring, paints and coatings in drums. Lower classes ship cheapest per pound — dense freight is easy to handle and hard to damage.

Check if your shipment is class 55

Handling units

Length (in)

Width (in)

Height (in)

Total weight (lb)

Density

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Cubic feet

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Estimated class

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Measure the handling unit as it ships — palletized freight includes the pallet's dimensions and weight. Density-based estimate; the NMFC commodity listing (handling, stowability, liability) can override it.

Neighboring classes

Class 50 (denser) · Class 60 (lighter) · Full class chart & calculator

Is density the only factor?

No — density sets the baseline since NMFTA's 2025 changes, but commodities with special handling, stowability or liability characteristics keep their own NMFC listings. Confirm with the NMFC or your carrier before booking.