Shipping Frozen Food Freight Class Guide
Frozen Food typically classify around Class 55, in the 35-50 lb/ft³ density range. Palletized frozen food, reefer required.
Calculate Frozen Food Freight Class
Enter your actual shipment dimensions and weight below. Typical frozen food run 1,500-2,000/pallet lb, but your exact class depends on your specific shipment's measured density.
Measure the full footprint including packaging, and include pallet weight in your total. Carriers will re-measure at the terminal.
Shipping Frozen Food the Right Way
Reefer Setpoint Is Non-Negotiable
Frozen food needs a continuous setpoint well below freezing, typically around 0 degrees Fahrenheit or lower depending on the product, held from pickup through delivery. Any gap in that chain, even a short one during loading, risks partial thaw and a rejected shipment.
Cold Chain Depends on Transit Time
Frozen freight is planned around how long the reefer unit can hold temperature without refueling or servicing, so dispatch needs accurate transit estimates and a reefer unit checked and fueled before departure, not just a trailer that happens to be cold at pickup.
Thaw Damage Is a Claims Risk, Not Just a Quality Issue
Even a partial thaw and refreeze cycle can ruin frozen product without any visible damage to the packaging, which makes frozen food claims harder to catch at a quick inspection and more likely to surface only after the receiver opens the load.
Frozen Food: What Carriers and Shippers Look For
Frozen food is one of the few commodities on this site where temperature control genuinely drives the shipping conversation rather than freight class. Palletized frozen goods run dense enough to land in a mid range class, so the rate is rarely a surprise. What actually matters is holding a hard freeze from pickup to delivery, since even a brief temperature excursion can spoil product, trigger a rejected delivery, and turn into a full claim regardless of how well the pallet was built.
Why Frozen Food Classifies Around Class 55
Palletized frozen food typically runs 35 to 50 pounds per cubic foot once product is stacked tightly in cases with minimal void space, which puts most shipments in the Class 55 range under the standard density table, one of the denser, less expensive classes on the chart. Unlike most commodities where freight class is the main cost driver, frozen food's real cost driver is the reefer equipment and the cold chain discipline needed to keep it frozen, not the classified rate itself.
Reefer Temperature Setpoints and Cold Chain Handling
Frozen food setpoints typically run at 0 degrees Fahrenheit or below, though the exact number depends on the specific product and the shipper's requirements, so drivers should confirm the setpoint on the bill of lading rather than assuming a standard freezer temperature applies. Pre-cooling the trailer before loading matters just as much as the setpoint itself, since loading frozen product into a warm trailer box creates a temperature spike that the reefer unit then has to fight to recover from.
Continuous temperature monitoring with a recorder or telematics device gives both the shipper and the carrier a record showing the load stayed within range for the entire trip, which is often the deciding factor when a claim is disputed. Drivers should also avoid opening trailer doors more than necessary at intermediate stops, since every door opening lets warm air in and forces the reefer unit to work harder to recover.
Equipment and Handling Notes
Reefer equipment is required for frozen food, full stop, and dry van substitutions are not acceptable even for short hauls. Pallets should be stacked to allow air circulation around the load so cold air can actually reach every case, since tightly packed freight against the trailer walls or ceiling can create warm pockets even when the reefer unit itself is working correctly.
Common Shipping Mistakes
The most common mistake is loading frozen product into a trailer that has not been properly pre-cooled, which stresses the reefer unit and risks a temperature excursion in the first hours of the trip. The second is blocking air circulation by stacking pallets too tightly or too close to the trailer walls, which can leave part of the load warmer than the setpoint even though the unit is reading correctly at the front of the trailer.
Related Food & Beverage
Carriers Hauling Frozen Food
“Reefer freight leaves no room for shortcuts. I pre-cool the trailer before I even get to the dock, because a warm box at loading means I'm fighting to recover temperature for hours.”
“I check the setpoint on the paperwork every single load. Frozen products aren't all the same temperature, and guessing wrong can cost the shipper the whole pallet.”