If the commodity is in distinct usable units made up of one or more components or ply, the statement of net quantity of contents shall (in addition to complying with the requirements of linear and area measurement declaration for each unit as specified in § 500.12) include the number of ply and the total number of usable units.
“100 2-ply facial tissues, 81/2 inches × 10 inches” (21.5 × 25.4 cm).)