Potentially yes — if the outer surface is metal (such as aluminum) rather than plastic sheeting, leather, or textile, the NES subheading is the appropriate residual provision. However, the specific construction should be reviewed with a customs broker, as some metal-framed cases with fabric or plastic panels may classify differently depending on which material constitutes the predominant outer surface.

Requesting a CBP binding ruling before importation is the most reliable approach. Providing a physical sample and a detailed material specification sheet allows CBP to confirm whether a more specific subheading applies or whether the NES provision is correct, giving the importer certainty on duty rates and classification.