provided, however, that if there is immediately to the right or left of such principal display panel, a panel which has a width not greater than 20 percent of the circumference and a height as high as the container, and which is reserved for information prescribed in paragraphs (c)(2), (3), and (5) of this section, such panel shall be known as the "20 percent panel" and such information may be shown on that panel in lieu of showing it on the principal display panel, as provided in paragraphs (f)(3), (g)(2), and (i)(8) and (9) of this section.
N.Y. Comp. Codes R. & Regs. Tit. 1 § 317.2