3925.20.00 - Doors, windows and their frames and thresholds for doors

This HTS category, 3925.20.00, specifically encompasses doors, windows, and their corresponding frames and thresholds, when manufactured from plastics. The key defining characteristic is the material composition: these builders' ware items must be predominantly plastic. This includes a wide range of products used in the construction of buildings, such as hinged doors, sliding doors, casement windows, and fixed windows, along with their associated mounting hardware and sills.

Distinguishing this category from its siblings, 3925.10.00.00 covers large plastic containers like reservoirs and tanks, and 3925.90.00.00 is a residual category for other builders' wares not otherwise specified. Furthermore, the subcategory 3925.30 deals with external fittings like shutters and blinds, not integral building openings. Therefore, 3925.20.00 is precisely for the elements that form openings in walls and structures.

To facilitate more precise classification within this grouping, subcategories exist to differentiate between the primary types of openings. Subcategories 3925.20.00.10 and 3925.20.00.20 provide for the distinct classification of doors and door frames versus windows and window frames, respectively. The residual subcategory 3925.20.00.91 is for any other plastic builders' ware falling under the scope of doors and windows that does not fit into the more specific enumerations.