Subclasses for
52190-1
52190-2
52190-3
52190-4
52190-5
52190-6
100
85
70
70
50
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Subject to Item 170 and having a density in pounds per cubic foot of:
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Greatest dimension exceeding 288 inches
Greatest dimension exceeding 192 inches but not exceeding 288 inches
Greatest dimension exceeding 96 inches but not exceeding 192 inches
Greatest dimension not exceeding 96 inches
Less than 30
30 or greater
Greatest dimension exceeding 288 inches
Greatest dimension exceeding 192 inches but not exceeding 288 inches
Greatest dimension exceeding 96 inches but not exceeding 192 inches
Greatest dimension not exceeding 96 inches
Less than 30
30 or greater
The National Motor Freight Traffic Association (NMFTA) publishes a list of freight class designations, codes, and subclasses for commonly shipped items (https://classit.nmfta.org/). A subscription fee is required to access this list. You can learn more about freight classes from the experts at Koho for free on our freight classes pages.
The first step in determining your freight class is to take measurements. Measure the height, width and depth of your shipment then multiple those three measurements together for the total cubic feet. Then divide the total cubic inches by 1,728 (the number of cubic inches in a cubic foot). Finally, divide the weight (in pounds) of the shipment by the total cubic feet.
NMFC freight classes are determined using four factors: density, handling, stowability, and liability. All of these factors affect the cost to the carrier of shipping goods.