Other plates — HTS 3921
Other plates, sheets, film, foil and strip, of plastics
Chapter 39 › Heading 3921
2026 HTS Rev 19 Synced Rules verified Operational
Written to help non-specialists understand this page. Rates, dates, and legal facts come from the official records above and on the linked source.
HTS heading 3921 is a broad product category for plastic plates, sheets, film, foil, and strip that are classified as “other” rather than under the more specifically described headings in the plastics chapter. It can cover flat or roll-form plastic products, including certain cellular or noncellular materials and products that are reinforced, laminated, supported, or similarly combined, depending on their construction and the applicable legal notes.
To reach a specific 8-digit HTSUS code, first determine the product’s physical form and construction. The subheadings commonly distinguish factors such as whether the plastic is cellular or noncellular, the type of plastic polymer, and whether it is reinforced or combined with another material. Confirm the product’s principal material, manufacturing process, dimensions or format when relevant, and any applicable Chapter 39 notes before selecting the statistical suffix.
What to check
- Identify the plastic polymer or polymers, using supplier specifications, technical data sheets, or laboratory information when needed.
- Check whether the product is cellular or noncellular, and document how that characteristic is defined for tariff purposes.
- Describe any reinforcement, lamination, backing, coating, or other supporting material and determine whether it changes the classification.
- Compare the product with headings and exclusions elsewhere in Chapter 39 before treating it as “other” under heading 3921.
- Verify the complete 8-digit HTSUS entry, including the statistical suffix, against current official tariff data; seek a customs broker or binding ruling when the construction or material is uncertain.
HTS heading 3921 summary
Other plates is a 4-digit product category containing 3 published product-code lines in this snapshot. A heading does not carry one universal duty rate; classification must be narrowed to the line matching the product facts.
How to find your code in this category
A heading is a product category. To get the exact duty, narrow from this 4-digit heading to a sub-category (usually by material), then open the 8-digit code that matches your product.
Open any code in the tables below to see its exact duty rate, a duty calculator (enter your shipment value → estimated duty and landed cost), the rate-change history chart, and the country-by-country breakdown (including Section 301/232 add-on duties).
Why you have to click in: a single category can contain products with very different duties. The rate depends on the specific product — its material and construction — and on the country of origin, and those only get pinned down at the 8-digit code level. That is why this page points you to codes instead of showing one rate for the whole category.
Sub-categories
| Code | Description |
|---|---|
| 3921.12 | Of polymers of vinyl chloride |
| 3921.13 | Of polyurethanes |
| 3921.90 | Other |
Product codes & duty rates
👇 Each row is a specific product code — click a blue code to open its full page with exact duty rates by country, the rate-history chart, and a duty calculator. 👉
| Code | Description | General (MFN) | Special | Column 2 |
|---|---|---|---|---|
| 3921.11.00.00 👉 | Of polymers of styrene | 5.3% | Free | 80% |
| 3921.14.00.00 👉 | Of regenerated cellulose | 6.5% | Free | 60% |
| 3921.19.00 👉 | Of other plastics | 6.5% | Free | 50% |
"Special" shows the free-trade-agreement rate; open a code to see exactly which countries qualify.
Common questions
What products fall under HTS heading 3921?
Other plates, sheets, film, foil and strip, of plastics. To classify a specific item you must pick the matching sub-category and 8-digit code above; the right choice usually depends on the material and construction of the product.
How do I choose the right code within this category?
Start from the sub-categories (typically divided by material—for example cotton versus man-made fibers), then open the active 8- or 10-digit code that matches the product. When unsure, a licensed customs broker or a CBP binding ruling can confirm the classification.
Reference information only, not customs, legal, or classification advice. Confirm the current code and rate against the official HTS before you import.