What freight class are generators?

Portable generators typically rate class 70 - 92.5 (10 - 22.5 pcf); large standby units on skids are denser and can rate class 65. The exact class depends on the measured density of your packaged shipment.

How do I find the exact class for my generators shipment?

Measure the packaged dimensions and weight, compute pounds per cubic foot, and read the current 13-band NMFC density scale - or use the free calculator on this site. Confirm the NMFC item number with your carrier for the BOL.

Did the 2025 NMFC changes affect generators?

Docket 2025-1 (July 2025) moved roughly 2,000 commodity listings to density-based classification and rebuilt the density scale to 13 bands, so most freight - including this category - now classes primarily by measured density.

Freight Class for Generators: Typical Classes & How to Verify

Why generators rate where they do

Generators are engine-dense machines: portable units in retail boxes usually measure 10 - 18 pcf (class 70 - 92.5), while industrial standby generators bolted to skids are heavier per cube and can reach class 65.

Worked example. A boxed portable generator: 30 × 24 × 24 in, 210 lb. That is 10.0 cu ft and 210 lb → 21.00 pcf → class 70. Run your own numbers →

Relevant class pages: class 70 · class 85 · class 92.5.

What moves the number

Drain fuel completely before tendering - fuel in the tank makes the shipment hazmat and most LTL carriers will refuse or re-bill it. Bolt or band the frame; a shifted generator damages everything around it.

Measure, don't assume. Since NMFC Docket 2025-1 (July 2025) most commodities class by measured density on a 13-band scale. The ranges above are typical, not guaranteed — your packaging decides your density. Calculate your actual class →

Freight class for generators

Why generators rate where they do

What moves the number