U.S. No. 1 Boilers consists of onions which meet all the requirements for the U.S. No. 1 grade except for size. (See § 51.2830 .) Size: The diameter of onions of this grade shall be not less than 1 inch nor more than 17/8 inches. (See § 51.2837 .)
7 C.F.R. §51.2833