Freight Density and NMFC Class

Density (lb/ft^3) and NMFTA density-class bracket from handling unit.

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Details, formula, and sources

Density = weight (lb) / volume (ft³). NMFTA NMFC bracket assignment from density (lb/ft³) into Class 50 (>= 50 pcf) through Class 500 (< 1 pcf).

NMFTA NMFC density-class brackets by name. Cited by name only; NMFC item descriptions and commodity codes not reproduced.

NMFC publication licensed; class-density bracket cutoffs free in published carrier rate guides.

Math aid for personal verification. The ELD on the truck and the carrier tariff are the legal record. State limits may be lower than federal.

Field names used by the API: length_in, width_in, height_in, weight_lb, cubic_ft, density_pcf

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