Freight Class Examples
Class 65 for 750 lb at 48x40x30 in
Class 65 is the density-based estimate for 750 lb at 48 x 40 x 30 inches because the complete handling unit calculates to 22.50 pounds per cubic foot.
Full density and class calculation
The outside envelope contains 48 x 40 x 30 = 57,600 cubic inches. Dividing by 1,728 converts that envelope to 33.33 cubic feet. Dividing the gross packaged weight of 750 pounds by 33.33 cubic feet gives 22.50 pcf. The current density table places 22.50 pcf in the 22.5 to under 30 pcf band, which produces the class 65 screening result shown above.
48 x 40 x 30 / 1,728 = 33.33 ft3; 750 / 33.33 = 22.50 pcf; density estimate = class 65.
Nearest freight class boundaries
At this exact footprint and height, the lower edge of the current band corresponds to 750.0 pounds. A decrease of about 0.0 pounds would reach that edge and can move the density estimate toward the next higher class number. The upper edge corresponds to 1000.0 pounds. An increase of about 250.0 pounds would reach the higher-density edge and can move the estimate toward the next lower class number.
The same boundaries can be expressed as height changes while holding 750 pounds and the 48 x 40 inch footprint constant. A packaged height near 22.5 inches reaches 30 pcf, while a height near 30.0 inches reaches 22.5 pcf. Decreasing height raises density; increasing height lowers density. Measure the final wrapped load rather than choosing a favorable nominal carton height.
| Boundary | Weight at current size | Height at current weight |
|---|---|---|
| 22.5 pcf | 750.0 lb | 30.0 in |
| 30 pcf | 1000.0 lb | 22.5 in |
What changes the answer
If the entered 30 inch height omitted a 5.6 inch pallet base, including that base would produce 18.96 pcf and a density estimate of class 70. Two inches of combined length and width overhang would produce 20.57 pcf and class 70. Two additional inches of shrink wrap, corner board, or top projection would produce 21.09 pcf and class 70. These comparisons show why the greatest tendered dimensions control the arithmetic.
How stable is this estimate?
This combination sits close to the lower-density edge of its band. Small measurement or scale differences can therefore change the density-based class estimate. Recheck pallet overhang, wrap, projections, gross pallet weight, and carrier inspection measurements before using class 65 for planning.
Decision profile for this exact load
The 48 x 40 inch footprint matches a common North American pallet plan, so final wrapped height is the dimension most likely to be omitted from a nominal pallet description. 3 of the three packaging corrections tested on this page changes the density-based class result. The closest band edge is 0.00 pcf from the calculated density, and the load sits 0.0% of the way from the 22.5 pcf edge to the 30 pcf edge.
Four-factor NMFC caveat
NMFC classification is not determined by density alone. The four transportation characteristics are density, stowability, handling, and liability. A commodity item, packaging rule, unusual handling need, poor stowability, or liability characteristic can override this density-only estimate and lead to a different official class.
Use the current NMFTA ClassIT+ record or qualified classification guidance to confirm the governing item and rules. Freight Totals is independent of NMFTA and carriers, and this page is a planning calculation rather than an official classification or rate.
Sources
- NMFTA: NMFC 13-Sub Density and Class BreaksSource record 2026-08-13. Density-based NMFC provisions only
- NMFTA: How is the density of a handling unit calculated?Source record 2026-08-12. LTL handling-unit measurement