Freight Class for Lawn Mowers
Boxed lawn mowers usually rate freight class 125 to 175. A Toro Recycler walk-behind in its 42 × 24.5 × 17.25 inch box measures about 6.8 lb/ft³, class 125, and a 42-inch Toro zero-turn in an 82 × 49 × 35 inch box about 6.5 lb/ft³, also class 125. Gas mowers must ship with the fuel drained, leaving no more than 500 mL, or they move as hazmat.
What mower boxes measure
Toro publishes box sizes for its mowers. The 22-inch Recycler 21442 walk-behind ships in a 42 × 24.5 × 17.25 inch box and weighs 70 lb, which is about 6.8 lb/ft³, class 125. The 42-inch TimeCutter 77404 zero-turn ships in an 82 × 49 × 35 inch box and weighs 527 lb, about 6.5 lb/ft³, also class 125.
Toro lists the machine weight, not the boxed weight, so the real density is a little higher than these figures. A taller box changes the result: the TimeCutter MyRIDE 75747 ships in a box 52 inches high and comes out near 4.9 lb/ft³, class 175.
Worked examples
Box sizes and machine weights come from Toro's product pages. Toro gives the machine weight, so the boxed weight is a little higher.
Walk-behind gas mower — class 125
Toro Recycler 21442 box: 42 × 24.5 × 17.25 in; machine weight 70 lb.
42 × 24.5 × 17.25 = 17,750 in³ ÷ 1,728 = 10.3 ft³. Density = 70 lb ÷ 10.3 ft³.
6.8 lb/ft³ → class 125, a little denser once the box weight is added.
Zero-turn riding mower — class 125
Toro TimeCutter 77404 box: 82 × 49 × 35 in; machine weight 527 lb.
82 × 49 × 35 = 140,630 in³ ÷ 1,728 = 81.4 ft³. Density = 527 lb ÷ 81.4 ft³.
6.5 lb/ft³ → class 125. The box is 82 inches long, under the 8-foot length charges.
Zero-turn in a taller box — class 175
Toro TimeCutter MyRIDE 75747 box: 82 × 49 × 52 in; machine weight 589 lb.
82 × 49 × 52 = 208,936 in³ ÷ 1,728 = 120.9 ft³. Density = 589 lb ÷ 120.9 ft³.
4.9 lb/ft³ → class 175.
Fuel: drain it or ship it as hazmat
Under 49 CFR 173.220, a mower's fuel tank must be drained and securely closed, but up to 500 mL (17 oz) of fuel may stay in the tank, engine and fuel lines if they are closed. A machine counts as having no fuel only when the engine and fuel lines are fully drained, cleaned and purged of vapor.
A gasoline mower that does not meet those conditions is regulated: the Hazardous Materials Table lists flammable-liquid-powered machinery as UN3528, Class 3, and other internal-combustion machinery as UN3530, Class 9. Drain the fuel before pickup and say so on the bill of lading.
Battery mowers
Battery-powered machinery is treated more lightly. Under 49 CFR 173.220(c), by highway, rail or vessel it is subject to no other hazmat requirements except § 173.21, as long as the battery is securely installed and protected against heat, short circuits and damage to the terminals.
A spare lithium battery shipped on its own is a different item, covered by the lithium battery rules. Ship spare packs in the maker's packaging, or ask the carrier first.
Check your mower's class
Enter the box or crate size and the shipping weight. For a rider on a pallet, measure the full unit from the floor.
Density-based estimate. Some commodities carry a fixed NMFC class — check our freight class by commodity pages.
Estimated Freight Class
Density
6.99
lb/ft³
Volume
53.33
ft³
Weight
373
lb
6–8 lb/ft³ → Class 125
NMFC density scale (Docket 2025-1, effective July 19, 2025)
Pre-July-2025 table: class 150. Use it only if your carrier contract still prices on the old table.
Free PDF includes a watermark. Pro removes it & adds your brand.
Estimates only — verify freight class/NMFC and chargeable weight with your carrier.
Uses the 13-tier NMFC density scale (Docket 2025-1). See the full freight class chart.
Frequently asked questions
What freight class is a lawn mower?
Usually class 125 to 175. A boxed Toro walk-behind measures about 6.8 lb/ft³ (class 125); a boxed zero-turn measures 4.9 to 6.5 lb/ft³ (class 125 to 175), depending on the box height.
Do I have to drain the gas to ship a mower?
Yes, for it to ship as ordinary freight. 49 CFR 173.220 requires the tank to be drained and closed, with no more than 500 mL (17 oz) of fuel left in the tank, engine and lines.
Is a gas mower hazmat?
It can be. Flammable-liquid-powered machinery is UN3528, Class 3, in the Hazardous Materials Table, unless the fuel conditions in 49 CFR 173.220 are met.
How do battery mowers ship?
Under 49 CFR 173.220(c), battery-powered machinery moving by highway needs only the § 173.21 basics, as long as the battery is securely installed and protected from short circuits and damage.