Classification within 3702 depends on three measurable attributes: width (e.g., not over 105 mm, over 105 mm but not over 610 mm, or over 610 mm), length (e.g., not over 30 m versus over 30 m), and whether the roll has sprocket holes. Color versus monochrome emulsion is an additional split at several width breaks. Measuring all three dimensions before entry is essential to selecting the correct subheading.

Yes. Wide-format rolls without sprocket holes that exceed 610 mm in width are classified under subheadings 370241–370243 depending on length and whether the emulsion is color or non-color, while standard 35 mm camera film falls under the 370252–370256 group. The width and sprocket-hole criteria are the primary classification gates.