70 Pa. Code § 23.56
In the case of cylindrical or nearly cylindrical containers, information required to appear on the principal display panel shall appear within that 40% of the circumference which is most likely to be displayed, presented, shown or examined under customary conditions of display for retail sale.
The provisions of this § 23.56 adopted October 21, 1970, effective October 22, 1970, 1 Pa.B. 44.
This section cited in 70 Pa. Code § 23.21 (relating to general).