7 C.F.R. § 51.3198

Size classifications

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Size shall be specified in connection with the grade in terms of minimum diameter, range in diameter, minimum diameter with a percentage of a certain size or larger, or in accordance with one of the size classifications listed below: Provided, that unless otherwise specified, onions shall not be less than 1 1/2 inches in diameter, with 60 percent or more 2 inches or larger in diameter.

Size designationMinimum diameterMaximum diameter
InchesMillimetersInchesMillimeters
Small125.421457.2
Repacker/Prepacker 113444.5376.2
Medium250.831482.6
Large or Jumbo376.2(2)
Colossal33495.3(2)
1 In addition to the sizes specified, a lot of onions designated as Repacker or Prepacker shall contain at least 60 percent or more 2 inches or larger in diameter.
2 No requirement.