Medical & lab/Density or item-specific
Medical device freight class and NMFC guide
Medical devices are high-value and fragile, and the packaging is often a substantial part of the shipment. Density is secondary to securement, liability, and handling instructions.
Reviewed November 11, 2026 · Reference 2026.11 · Estimate, not a classification
At a glance
MixedClassification basis
Density or item-specific
Typical packed density
6–12 lb/ft³
Wide estimate
Density-rated span
Class 85–125
Reclass risk
High
The commodity ships in several forms, is easy to under-measure, or changes cube sharply with assembly or packaging.
Handling flags
Density-based estimate. Confirm the NMFC item, the packaging form, and any density subprovision before booking.
What drives the class
The density story behind medical devices.
Medical device density varies widely. A monitor in a foam-lined carton is light for its cube; a case of surgical instruments is dense. The packaging is usually designed for shock and vibration, which adds cube and lowers density. Calibration, sterility, and liability are separate from the class. Some devices need a no-stack, keep-upright, or temperature-controlled position, and those instructions belong on the BOL and the carton.
Density or item-specific. Medical devices may be density-rated as packaged units. Sterile, calibrated, or temperature-sensitive devices can add handling provisions.
Density thresholds
Where the estimate sits on the 2025 scale.
The highlighted rows are the classes touched by the endpoints of the typical density estimate. A single measured density returns one class; the span is a planning range. The scale is effective July 19, 2025.
| Density band | Class | Estimate |
|---|---|---|
| 50 or more lb/ft³ | 50 | Reference |
| 35 to under 50 lb/ft³ | 55 | Reference |
| 30 to under 35 lb/ft³ | 60 | Reference |
| 22.5 to under 30 lb/ft³ | 65 | Reference |
| 15 to under 22.5 lb/ft³ | 70 | Reference |
| 12 to under 15 lb/ft³ | 85 | Typical span |
| 10 to under 12 lb/ft³ | 92.5 | Typical span |
| 8 to under 10 lb/ft³ | 100 | Typical span |
| 6 to under 8 lb/ft³ | 125 | Typical span |
| 4 to under 6 lb/ft³ | 175 | Reference |
| 2 to under 4 lb/ft³ | 250 | Reference |
| 1 to under 2 lb/ft³ | 300 | Reference |
| 0 to under 1 lb/ft³ | 400 | Reference |
Measure it right
The handling unit is the shipment.
Carriers measure what is tendered, not the product inside the box. Use the pallet, crate, or bundle as the handling unit and include everything that travels with it.
- Measure the shipping carton or crate, including foam and any shipping frame.
- Use gross weight with the device, case, accessories, and pallet.
- Confirm the weight and dimensions against the lift and securement plan.
The formula
cube = L × W × H ÷ 1,728
density = gross lb ÷ cubeRound for display only. Compare the unrounded density to the scale boundary.
Fragile
Needs securement, cushioning, or a damage-resistant loading position.
High value
Liability limits and securement matter as much as the class.
Pack it for the rating
Packaging changes the cube before it changes the class.
- Use the manufacturer shipping case where possible; calibration and shock limits may depend on it.
- Label keep upright, no stack, and fragile as required, and document the instructions on the BOL.
Don't confuse it with
Adjacent items, different answers.
The most expensive classification mistake is usually a description that sounds close but is not the item. Check these before you copy a description from another shipment.
Pharmaceuticals
Hospital beds
Lab supplies
Before you book
Make the rating defensible.
- Confirm the item for the specific device and packaging.
- Ask whether the device needs temperature control, no-stack, or keep-upright service.
- Document serial numbers and existing damage before pickup.
BOL description template
Starting pointMedical devices, [device description], crated, [quantity] units, [gross weight] lb gross, [length x width x height] in per crate, [handling instructions].
Add the confirmed NMFC item number before you tender the shipment. The template describes the freight; it is not a classification.
Common questions
Medical devices and the 2025 scale.
How are medical devices classified for LTL freight?
At an estimated packed density of 6–12 lb/ft³, the 2025 density scale spans Class 85–125. That is a planning span derived from the endpoints of the density estimate, not a promise that every shipment lands in every class. The NMFC item and the shipment as tendered control the final class.
What is the classification basis for medical devices?
Density or item-specific. Medical devices may be density-rated as packaged units. Sterile, calibrated, or temperature-sensitive devices can add handling provisions.
How do I confirm the NMFC item for medical devices?
Confirm the item for the specific device and packaging. Ask whether the device needs temperature control, no-stack, or keep-upright service. Document serial numbers and existing damage before pickup. Confirm the current item in ClassIT+ or with the carrier before booking.
Related commodities
Keep the comparison close.
Medical & lab
Pharmaceuticals
Pharmaceuticals are high-value, often temperature-sensitive, and heavily regulated. Density is only one input; chain of custody, temperature control, and liability usually decide the service.
Class 70–92.5Medical & lab
Hospital beds
Hospital beds are large, heavy, and often shipped knocked down or in sections. The handling unit, not the bed frame, decides the measured cube and the class.
Class 100–175Appliances & electronics
Computers & servers
Computers and servers are dense for electronics, especially when rack-mounted or crated. The class usually depends on the rack, crate, and whether the shipment includes monitors and accessories.
Class 70–100Furniture & fixtures
Mattresses
Mattresses are bulky and light for their cube, so packed density usually lands in the low single digits. Compression, pallet height, and overhang move the result more than the mattress type.
Class 175–250Sources & limits
What this page is, and what it is not.
This is an independent planning reference, not the NMFC and not a carrier classification. The typical density is an estimate. The class span is derived from the 2025 density scale. The NMFC item, the carrier tariff, and the shipment as tendered control the final rating.
Reviewed November 11, 2026 · Reference 2026.11
- NMFTA — National Motor Freight Classification
The official classification system, its 18 classes, and the role of the NMFC item.
- NMFTA — 2025 NMFC changes
The July 19, 2025 effective date and the density-scale restructuring.
- NMFTA — ClassIT+
The licensed lookup for current NMFC item numbers and classification text.
- Estes — freight class and density calculator
Carrier measurement and density conventions used to sanity-check the ranges.
Next step
Measure the load, then check the class.
Use the freight class calculator for a measured density, the pallet calculator for the finished handling unit, and the chart for the full 2025 reference.