9902.12.21 - Replacement side doors of plastics, designed for housings for digital still image video cameras of subheading 8525.80.40 (provided for in subheading 3926.90.99)

This HTS category, 9902.12.21, specifically covers replacement side doors made of plastic, which are intended for use as parts in housings for digital still image video cameras. These cameras are themselves classified under subheading 8525.80.40, and the doors are further provided for within the broader classification of subheading 3926.90.99, indicating they are articles of plastic not elsewhere specified. The purpose of this distinct classification is to apply specific temporary legislation or modifications to these particular parts.

Distinguishing this category from its siblings in Chapter 99 is crucial. Chapter 99 is reserved for temporary legislation, trade agreement modifications, and import restrictions, often related to specific industries or policy objectives. Unlike broader, permanent HTS categories that classify general goods based on their inherent nature and function (e.g., live animals, machinery), this 9902 series focuses on specific items that are subject to targeted regulatory treatment. Therefore, while other 9900 series codes might address temporary duty rates or quotas on different types of goods, 9902.12.21 is narrowly focused on these specific camera housing replacement parts.

As this is a leaf node, there are no further subcategories within 9902.12.21. This indicates that once an item meets the specific criteria of being a plastic replacement side door for digital still image video cameras of subheading 8525.80.40, it is definitively classified under this code. Classification hinges on verifying the material (plastics), the specific function (replacement side door), and the intended use with the specified type of camera.