16 CFR 500.6 - Net quantity of contents declaration, location.
(b) The declaration of net quantity shall appear as a distinct item on the principal display panel, shall be separated (by at least a space equal to the height of the lettering used in the declaration) from other printed label information appearing above or below the declaration and, shall not include any term qualifying a unit of weight or mass, measure, or count such as “jumbo quart,” “giant liter,” “full gallon,” “when packed,” “minimum,” or words of similar import. The declaration of net quantity shall be separated (by at least a space equal to twice the width of the letter “N” of the style of type used in the net quantity statement) from other printed label information appearing to the left or right of the declaration. However, the “e” mark shall not be considered to be a qualifying word or phrase and may be used as part of the statement of the net quantity of contents where warranted. When used, the “e” mark shall be at least 3 millimeters (approximately 1/8 in) in height. The declaration of net quantity of contents shall be placed on the principal display panel within the bottom 30 percent of the area of the label panel in lines generally parallel to the base on which the package or commodity rests as it is designed to be displayed: Provided, that:
(1) On consumer commodities having a principal display panel of 5 square inches (32.2 cm 2) or less, the requirement for placement within the bottom 30 percent of the area of the label panel shall not apply when the declaration of net quantity of contents meets the other requirements of this part, and
(2) The requirements as to separation, location, and type size, specified in this part are waived with respect to variety and combination packages as defined in this part.