Dense pallet of frozen fish cases
Uniform frozen cases tightly palletized
48 × 40 × 48 inPackaged weight: 900 lb
Cubic feet53.33
Density16.88 lb/cu ft
Estimated classDensity-based70
Frozen Seafood LTL Shipping Guide
Frozen Seafood Freight Class
Key Frozen Seafood Freight Facts
Frozen seafood may ship under commodity-specific freight classifications rather than a single density-only class. Some current frozen fish and shellfish provisions are Class 100, while other seafood items can classify differently. Finished package dimensions, insulation, pallet configuration, and product form can also change packaged density and the planning estimate.
To estimate your freight class, use the Frozen Seafood Freight Class Calculator ↓.
- ✓Use the finished shipping unit: Measure the complete pallet, carton stack, insulated packaging, and any overhang—not the product alone.
- ✓Temperature matters: Codex guidance for frozen fish and fishery products calls for maintaining -18°C (0°F) or colder during transport; minimize unnecessary warming during loading and unloading.
- ✓Density can change with packaging: Tray-packed fillets, insulated cases, and loosely built cartons can occupy more cube than tightly packed blocks or dense case packs, so shipments with similar weights can calculate very differently.
- ✓Check the estimate before booking: Use the Freight Class Calculator and Freight Class Chart to review density-based planning results; final classification can depend on more than density.
FROZEN SEAFOOD DENSITY CALCULATOR
A palletized frozen seafood shipment is preloaded as an example. Replace the outside dimensions and total packaged weight with your actual shipment.
Your result
Cubic feet
53.33
Density
13.13
lb/cu ft
Estimated freight class
85
Density-based estimate for the preloaded frozen-seafood example.
Frozen seafood shipment examples
Frozen Seafood Density & Freight Class Examples
These are illustrative planning examples, not typical frozen-seafood weights or commodity-specific class assignments. They show how finished pallet height, protective packaging, and total packaged weight can change density and the resulting generic density-chart class estimate.
Boxed frozen fillets
Palletized retail or foodservice cartons
48 × 40 × 48 inPackaged weight: 700 lb
Cubic feet53.33
Density13.13 lb/cu ft
Estimated classDensity-based85
Insulated frozen seafood cartons
Taller protected load with more packaging cube
48 × 40 × 72 inPackaged weight: 500 lb
Cubic feet80.00
Density6.25 lb/cu ft
Estimated classDensity-based125
Frozen seafood shipping profiles
Frozen Seafood Shipping Profiles
Finished packaging can change shipment density, pallet height, stackability, and handling needs even when the underlying product is similar.
| Frozen seafood shipment | Common packaging | Density tendency | Stackability | Planning note |
|---|---|---|---|---|
| Frozen fish blocks or dense cases | Sealed cartons or cases on a pallet | Medium to high | Often stackable when cartons are load-rated | Keep the load square and use the completed pallet dimensions for density. |
| Boxed fillets and portions | Master cartons, liners, pallet wrap | Medium | Conditional | Check carton compression strength, moisture exposure, and pallet overhang. |
| Frozen shellfish cases | Sealed cases or insulated cartons | Medium | Conditional | Protect packaging from crushing and keep product separated from contamination. |
| Insulated or heavily protected loads | Insulated cartons, liners, palletized cases | Low to medium | Often limited | Thermal packaging and added height can increase cube and lower packaged density. |
Frozen Seafood Important Considerations
Frozen seafood shipments can vary by product form, packaging, pallet configuration, and temperature requirements. Check the completed handling unit and the requirements of the specific product before shipping.
Temperature controlCodex guidance for frozen fish and fishery products calls for maintaining -18°C (0°F) or colder during transportation.
Loading & unloadingMinimize unnecessary exposure to warmer conditions while the shipment is being loaded, transferred, or unloaded.
Refrigerated airflowArrange refrigerated freight so cold air can circulate around the load and the refrigeration system can maintain the intended conditions.
Carton conditionCheck for crushed, torn, wet, open, or otherwise damaged outer packaging before tendering the shipment.
Pallet configurationUse the dimensions of the completed palletized load—including insulation, wrap, corner protection, and overhang—when calculating cube and density.
StackabilityDo not assume every frozen seafood pallet can accept top loading. Carton strength, moisture, load height, product configuration, and the finished handling unit can affect stackability.
Packaging densityTray-packed fillets, loose cartons, insulated cases, and tightly packed frozen blocks can have very different packaged densities even when shipment weights are similar.
Refrigerated service pricingTemperature-control, reefer, or cold-chain charges are separate from freight classification and may be priced independently by the carrier or service provider.
Carrier & service confirmationBefore booking, confirm that the selected carrier or service can handle frozen or temperature-controlled freight and the shipment conditions your product requires.
What to Measure for Frozen Seafood Freight
| Measure | Use this value |
|---|---|
| Length | Longest outside point of the finished pallet or packaged handling unit. |
| Width | Widest outside point, including wrap, corner protection, or overhang. |
| Height | From the floor to the highest point of the completed load, including the pallet. |
| Weight | Total packaged shipment weight, including cartons, insulation, pallet, and protective materials. |
Good to know: Density uses the finished shipping unit. A taller insulated load can calculate differently from the same seafood packed more compactly.
Pallet weight reference
48 × 40 × 48 Pallet Weight Reference
If your packaged frozen seafood shipment fits within a 48 × 40 × 48 in handling unit, this table shows approximately how much the completed pallet would weigh at common freight-density breakpoints.
| Density | Approx. pallet weight | Estimated class |
|---|---|---|
| 6 lb/ft³ | 320 lb | 125 |
| 8 lb/ft³ | 427 lb | 100 |
| 10 lb/ft³ | 533 lb | 92.5 |
| 12 lb/ft³ | 640 lb | 85 |
| 15 lb/ft³ | 800 lb | 70 |
| 22.5 lb/ft³ | 1,200 lb | 65 |
Reference volume: approximately 53.33 cu ft. These are derived planning values, not frozen-seafood weight requirements.
Use your actual pallet dimensions, packaged weight, and quantity for shipment planning.
Pallet Freight CalculatorTrailer space reference
48 × 40 Pallet Trailer Space Reference
For standard 48 × 40 in pallets loaded two across with the 40-inch side running down the trailer, this table shows the approximate trailer floor length used by common pallet counts.
| Standard pallets | Pallet rows | Approx. linear feet |
|---|---|---|
| 2 | 1 | 3.3 ft |
| 4 | 2 | 6.7 ft |
| 6 | 3 | 10.0 ft |
| 8 | 4 | 13.3 ft |
| 10 | 5 | 16.7 ft |
| 12 | 6 | 20.0 ft |
Actual trailer-space usage can change with pallet orientation, overhang, irregular dimensions, loading constraints, or freight that cannot be loaded two across.
Use your actual pallet dimensions, quantity, and orientation for a more specific trailer-space estimate.
Linear Feet CalculatorFreight Planning Calculators
Calculate and Plan Your Frozen Seafood Shipment
Use the freight class, density, pallet, and linear-feet calculators to plan your packaged LTL shipment.
Freight Class Calculator
Estimate freight class from packaged dimensions, weight, and density.
Freight Density Calculator
Calculate cubic feet and pounds per cubic foot for packaged freight.
Pallet Freight Calculator
Plan pallet dimensions, shipment weight, density, and configuration.
Freight Linear Feet Calculator
Estimate trailer-space usage for pallets and non-stackable freight.
Reviewed September 21, 2026 · Temperature guidance cross-checked against the Codex Code of Practice for Fish and Fishery Products; current frozen-fish and shellfish classification context cross-checked against NMFTA Docket 2026-2, Subject 11.
Freight classes shown on this page are density-based estimates for shipment planning. Actual classification may also depend on value, handling requirements, liability, stowability, dimensions, and other commodity-specific factors. Confirm the final freight class with your carrier, broker, or official NMFC resources before shipping. NMFC® is a registered trademark of the National Motor Freight Traffic Association, Inc. FreightClassCalculator.tools is an independent calculator and is not affiliated with, endorsed by, or licensed by NMFTA.