Freight Class 400 — Density Range, Examples & Calculator

Freight class

400

Density range

1–2 lb/ft³

Class 400 covers freight with a density of 1–2 lb/ft³. Typical examples: very light bulky goods: deer antlers, light fixtures, empty containers. Higher classes cost more per pound because light, bulky freight consumes trailer space and damages more easily.

Check if your shipment is class 400

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 300 (denser) · Class 500 (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.