15 CFR § 240.3
Permissible sizes
April 14, 2021
Lime in barrels shall be packed only in barrels containing 280 pounds or 180 pounds, net weight. For the purposes of this section the word “barrel” is defined as a cylindrical or approximately cylindrical vessel, cask or drum.
(Sec. 2, 39 Stat. 530; 15 U.S.C. 238)