Less than 1 lb - Class 400

1 but less than 2 lb - Class 300

2 but less than 4 lb - Class 250

4 but less than 6 lb - Class 175

6 but less than 8 lb - Class 125

8 but less than 10 lb - Class 100

10 but less than 12 lb - Class 92.5

12 but less than 15 lb - Class 85

15 but less than 22.5 lb - Class 70

22.5 but less than 30 lb - Class 65

30 or greater - Class 60

Square Foot = 1728

Height x Width x Length

12 x 12 x 12

## Formula

Object: To find the pounds per cubic feet for a particular carton to determine the actual class:

Square Foot = 1728 inches

Measure the carton and multiply the H x W x L**Example: **40" x 24" x 40" = 38,400 inches

8 pounds per carton

Divide 38,400 by 1728 = 22.22

8 (weight of carton) divided into 22.22 = 2.78

PCF 2.78 = Class 250