Freight Class 150 and Higher: What Shippers Should Check
Class 150 remains valid but is not a universal band on the current full-density scale. Learn what to verify for Class 150 and higher freight.
Freight class 150 is a valid NMFC class, but it does not have a universal 6-to-7-pounds-per-cubic-foot band on NMFTA’s current standard full-density scale. That scale moves from class 125 at 6 to less than 8 pounds per cubic foot to class 175 at 4 to less than 6.
Class 150 can appear in item-specific provisions and in classification work that accounts for handling, stowability, and liability. For class 150 and higher, shippers should verify the commodity item and shipping form before using density as a classification shortcut.
Where class 150 fits
| Comparison point | Class 150 |
|---|---|
| Valid NMFC class number | Yes |
| Position in the 18-class sequence | Between class 125 and class 175 |
| Standard 13-subprovision full-density band | None |
| FCDC density-guideline reference | Minimum average density of 6 lb/ft³ |
| Can density alone establish class 150? | No |
The standard full-density scale and the FCDC Density Guidelines are different. NMFTA’s policies say the guidelines aid class assignment when unusual or significant handling, stowability, or liability characteristics are present. A minimum-average-density reference in that table is not a universal bracket a shipper can apply directly.
Higher class numbers are not one simple density ladder
The NMFC contains 18 classes from 50 through 500. The standard full-density scale uses only 13 subprovisions, so not every valid class number appears as a band on that scale.
Above class 150, the current full-density scale includes:
- Class 175 at 4 to less than 6 pounds per cubic foot
- Class 250 at 2 to less than 4 pounds per cubic foot
- Class 300 at 1 to less than 2 pounds per cubic foot
- Class 400 below 1 pound per cubic foot
Classes 200 and 500 remain valid class numbers but do not have their own steps on the current standard full-density scale. Like class 150, they may appear in item-specific provisions or classification decisions that account for other transportation characteristics.
This is why a generic chart that assigns every class number a universal density range can be misleading.
What the NMFC evaluates
NMFTA evaluates commodities through four transportation characteristics:
- Density: packaged weight relative to occupied space
- Handling: the ease or difficulty of moving the freight
- Stowability: how effectively it can be placed with other freight
- Liability: risks such as damage, theft, perishability, hazardous nature, or damage to other freight
The standard full-density scale applies when a commodity does not exhibit unusual or significant handling, stowability, or liability characteristics. Items with those characteristics may use provisions that reflect more than density.
Do not assume that freight is class 150 because it is moderately light, palletized, fragile, valuable, or awkward. Those descriptions are too broad to select an NMFC item or class.
Check the commodity and shipping form
Start with a precise description of what is actually tendered. Depending on the commodity, the applicable NMFC provision may distinguish:
- Material or construction
- Intended use
- Assembled, disassembled, nested, or knocked-down form
- Cartons, crates, drums, bundles, skids, or other packaging
- Density, value, dimensions, or another specified condition
- Required packaging or references to other rules
Read the item, subitem, notes, packaging requirements, references, and symbols together. A class copied from an old product profile or broad commodity list may no longer describe the actual freight.
Use density only where the item requires it
When the applicable provision uses density, measure the complete handling unit as tendered. Include the pallet, crate, carton, cushioning, wrap, and projections in the outside dimensions and packaged weight.
For dimensions in inches:
- Multiply length by width by height to find cubic inches.
- Divide by 1,728 to convert cubic inches to cubic feet.
- Account for all handling units.
- Divide total packaged weight in pounds by total cubic feet.
NMFTA’s ClassIT+ density calculator follows this method. NMFTA also states that the calculator is for estimation and reference and does not suggest an item’s class.
The result supports the commodity lookup. It cannot create a class 150 assignment by itself.
Verify the effective NMFC content
Classification content changes. Use current ClassIT+ content for a new shipment and save the item, subprovision, class, and lookup date with the shipping record.
For an older quote or invoice, do not assume today’s provision applied. ClassIT+ can search historical content by date, supplement, or docket. That lets a reviewer identify the version in effect when the freight moved.
If the commodity remains uncertain, use qualified classification assistance instead of choosing a class from a calculator or a product example.
Check FAK and other pricing terms separately
Freight all kinds, or FAK, is not part of the NMFC. NMFTA describes it as a private pricing arrangement negotiated by a shipper and a carrier or 3PL. It can group different commodities under a class used for rating, while the underlying NMFC items and classes still matter.
If an FAK or another class-based pricing provision applies, confirm:
- Which parties and accounts are covered
- Which commodities or NMFC items are included
- The rating class specified by the agreement
- Any exclusions, shipment conditions, or documentation requirements
- The effective dates of the pricing terms
Do not place an assumed FAK class on a quote merely because one was used on a previous shipment. Confirm the applicable agreement.
What higher class means for a rate
Freight class can affect the rate basis, but a higher class number does not create one universal price increase. The quoted amount can also depend on:
- Origin and destination
- Total weight and handling-unit count
- Carrier tariff or customer pricing
- Minimum-charge and discount provisions
- Fuel treatment
- Pickup and delivery services
- Other applicable rules or exceptions
Compare complete quotes prepared from the same shipment facts. Do not compare the class number from one offer with the total from another and assume the difference came from class alone.
Freight class also does not establish transit time, service priority, or a guaranteed level of handling. Those depend on the selected service and carrier terms.
If the carrier reports different information
An invoice can differ from the quote for reasons other than class. Review whether the carrier changed:
- NMFC item or freight class
- Weight or dimensions
- Handling-unit count
- Pickup or delivery services
- Rate, discount, minimum-charge, or fuel treatment
- The party responsible for payment
If the class changed, compare the carrier’s available correction or inspection record with the original quote, bill of lading, packaged measurements, commodity description, and effective NMFC content. Follow the selected carrier’s billing-review process and deadlines.
Do not assume every correction produces the same fee, outcome, or dispute path.
Class 150 and higher checklist
Before requesting a rate, confirm:
- The commodity description is specific and current.
- The shipping form matches the NMFC item.
- The item, subitem, notes, packaging, and references have been reviewed.
- Density is being used only if the provision requires it.
- Outside dimensions and packaged weight describe the tendered handling unit.
- The NMFC content applies on the shipment date.
- Any FAK, class exception, tariff, or customer pricing term actually covers the shipment.
- Required pickup and delivery services are included in the quote request.
Prepare the quote inputs
Gather:
- Origin and destination ZIP codes
- Number and type of handling units
- Outside packaged dimensions for each unit
- Total packaged weight
- Precise commodity description
- NMFC item and freight class, when verified
- Pickup timing
- Required pickup and delivery services
Using the same verified inputs for each quote makes the options easier to compare and reduces ambiguity between the quoted shipment and the freight tendered.
Compare rates for the actual shipment
Shipocity is backed by a team with more than 40 years of combined logistics experience. Through established industry relationships, the platform helps businesses compare competitive freight rates for their specific shipment.
Once the commodity, packaged dimensions, weight, class, lane, and required services are ready, enter those details to compare the freight options available for the shipment.
