Pursuant to the authority in § 993.52, the provisions in § 993.49(c) prescribing size openings for undersized prune regulations are hereby modified to permit larger size openings. For French prunes, any undersized regulation may prescribe an opening of 23/32 of an inch or 24/32 of an inch; for non-French prunes, any undersized regulation may prescribe an opening of 28/32 of an inch or 30/32 of an inch.