CFR /  Title 7  /  Part 51  /  Sec. 51.2834 U.S. No. 1 Picklers.

U.S. No. 1 Picklers consists of onions which meet all the requirements for the U.S. No. 1 grade except for size. (See Sec. 51.2830.) Size: The maximum diameter of onions of this grade shall be not more than 1 inch. (See Sec. 51.2837.)