Prefabricated Buildings, Other Than Wood (Non-Modular Steel)

The distinction between 9406900110 (commercial) and 9406900120 (non-commercial) greenhouse lines turns on the intended use of the structure. Commercial greenhouses are those used in agricultural production for sale, while non-commercial structures serve residential or hobbyist purposes. Importers should retain purchase orders, end-user declarations, or business documentation that establishes the commercial or non-commercial nature of the buyer's operation.

Plastic animal sheds (9406900150) are industrial/structural goods and do not themselves trigger mandatory agency admissibility review. However, if the sheds are imported pre-fitted with feed or water systems, or if they are destined for use with regulated livestock operations, importers should confirm whether any USDA APHIS or state agricultural regulations apply to the facility use — those requirements are separate from the customs classification.