Commodity guide · glass

Freight class for glass

Crated sheet glass typically rates class 60 - 70 (15 - 35 pcf); boxed glassware rates class 85 - 100 with liability considerations on top.

Why glass rates where it does

Sheet and plate glass in A-frames or crates is heavy per cube - commonly 15 - 35 pcf, class 60 - 70. Packaged glassware and bottles land lighter at 8 - 15 pcf, class 85 - 100, because the protective packaging is most of the volume.

Worked example. An a-frame crate of sheet glass: 60 × 24 × 48 in, 1250 lb. That is 40.0 cu ft and 1250 lb → 31.25 pcf → class 60. Run your own numbers →

Relevant class pages: class 60 · class 70 · class 85.

What moves the number

Glass is one of the categories where the liability factor genuinely bites: fragility and claim exposure can put specific items above their pure-density class. Crate to survive a forklift, not a showroom, and photograph everything at tender.

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 →

Related: the full class chart · density calculator · how NMFC codes work.