Freight class 300
At 1.5 lb/ft³, a legacy chart and the current scale show different class labels.
1 to under 2 lb/ft³
The lower boundary of 1 lb/ft³ is included. Exactly 2 lb/ft³ enters class 250.
2025 density scale. Item confirmation required.
Where this class 300 example sits
Toward class 400: 1.5 − 1 = 0.5 lb/ft³ above the cutoff. The lower edge remains included. Toward class 250: 2 − 1.5 = 0.5 lb/ft³ to the next boundary.
A light 120 lb unit measuring 48 × 48 × 60 inches
Assume the complete handling unit, including its platform and packaging, weighs 120 lb. At 48 × 48 × 60 in, its volume is 80 ft³ and its density is 1.5 lb/ft³. The current density-scale estimate is class 300.
The separate legacy 18-class guideline assigns class 400 to this same density. A class 400 result copied from that chart does not establish that the new measurement is wrong; the chart version must be checked first. The legacy guideline is not the prior 11-tier NMFC scale.
| Scenario | Quantity × L × W × H; weight per unit | Total volume | Density | Class |
|---|---|---|---|---|
| Complete unit at 120 lb | 1 × 48 × 48 × 60 in at 120 lb each | 80 ft³ | 1.5 lb/ft³ | 300 |
| Same envelope at 80 lb | 1 × 48 × 48 × 60 in at 80 lb each | 80 ft³ | 1 lb/ft³ | 300 |
| Same envelope at 160 lb | 1 × 48 × 48 × 60 in at 160 lb each | 80 ft³ | 2 lb/ft³ | 250 |
Hypothetical measurements. Calculator Methodology.
Compare the measured scenarios
Unrounded density; rounded display labels.
A net weight and a gross weight can land in different bands
At the same 80 ft³ volume, a 160 lb gross weight gives exactly 2 lb/ft³ and class 250. If only a 120 lb contents weight were entered for that unit, the calculator would show class 300 instead. Pair finished dimensions with finished gross weight.
The 120 lb and 160 lb cases are separate stated assumptions. Neither is a typical pallet weight or a commodity classification. Verify the actual scale reading and the applicable item rather than using this example as a packing specification.
The 120 lb example reaches class 250 at 45 inches
Its volume would be 60 ft³ and density exactly 2 lb/ft³. A shorter package and a heavier gross weight are separate routes through the arithmetic; record whichever change actually occurred.
| Boundary density | Target volume | Total height | Class at boundary |
|---|---|---|---|
| 2 lb/ft³ | 60 ft³ | 45 in | 250 |
Arithmetic target; confirm safe packaging.
Questions before you ship
Why does another chart call 1.5 lb/ft³ class 400?
The legacy 18-class guideline and current 13-tier scale have different labels in this interval. This page uses the current 1 to under 2 lb/ft³ band, class 300. Check the chart version and whether the item uses that scale.
Related density bands
Sources
Reviewed 2026-10-25: NMFTA scale; effective July 19, 2025; packaging margin (2026).
Legacy charts: Direct Drive Logistics and FML Freight; comparison conventions.
Last updated