The width restriction in the heading description applies specifically to the copying and transfer papers (carbon paper, self-copy paper, and other copying or transfer papers). Paper offset plates and duplicator stencils are not subject to the same width limitation under the heading text, though their classification still depends on meeting the article description.

Carbonless or self-copy paper works through a chemical reaction between coatings on adjacent sheets when pressure is applied, and it is classified under 481620. Pressure-sensitive adhesive paper — which adheres to surfaces when pressed — is classified under 481141 in heading 4811. The functional mechanism and end-use differ substantially, and the coating chemistry is the key classification criterion.