Harmonized Tariff Schedule of the United States · HTS code · HS 3921.13
3921.13.50: Other plates, sheets, film, foil and strip, of plastics: cellular, of polyurethanes, other
Polyurethane foam sheets
Not declarable on its own: use one of its 1 subdivisions Data: Harmonized Tariff Schedule of the United States · checked on 24 October 2026
- 3921 Other plates, sheets, film, foil and strip, of plastics:
- Cellular:
- 3921.13 Of polyurethanes:
- 3921.13.50 Other
What you pay
Importing into USA
US additional duties of HTS chapter 99 in force on 22 October 2026 are included (Section 301, 232, 338 and 201). IEEPA duties are no longer collected after the Supreme Court ruling of February 2026. Conditional exemptions (US content, end use, metal share) are not computed: check the provision.
Additional duties and import rules
Charges on top of the customs duty, and rules the goods must meet at the border.
Additional duties and charges 2
- Additional dutySection 301 — China — technology transfer, IP and innovation (2018 actions and 2024 four-year review) 25%
- Applies to goods from
- China
- In force
- from 23 August 2018
- Legal act
- HTSUS 9903.88.02
- Additional dutyRussia rate increase (Pub. L. 117-110) — Russian Federation (rates in lieu of column 2) 30.8%
- Applies to goods from
- Russia
- In force
- from 28 June 2022
- Legal act
- HTSUS 9903.90.08
Preferential rates by country
| Agreement or scheme | Countries | Rate |
|---|---|---|
| General (MFN) | — | 4.2% |
| US–Australia FTA AU | Australia | Free |
| US–Bahrain FTA BH | Bahrain | Free |
| US–Chile FTA CL | Chile | Free |
| US–Colombia TPA CO | Colombia | Free |
| US–Israel FTA IL | Israel | Free |
| US–Jordan FTA JO | Jordan | Free |
| US–Korea FTA KR | South Korea | Free |
| US–Morocco FTA MA | Morocco | Free |
| US–Oman FTA OM | Oman | Free |
| CAFTA-DR P | Costa Rica, Dominican Republic, El Salvador, Guatemala, Honduras, Nicaragua | Free |
| US–Panama TPA PA | Panama | Free |
| US–Peru TPA PE | Peru | Free |
| USMCA S | Canada, Mexico | Free |
| US–Singapore FTA SG | Singapore | Free |
| Column 2 | Cuba, North Korea, Russia, Belarus | 25% |
Special: reduced rates under trade agreements and preference programmes; the letters in brackets name the programmes (for example AU = Australia FTA, KR = Korea FTA).
Footnotes
- 9903.90.08 Articles the product of the Russian Federation, as provided for in U.S. note 30(a) to this subchapter and as provided for in the subheadings enumerated in U.S. note 30(b) to this subchapter
Same subheading in other tariffs
3921.13 Other plates, sheets, film, foil and strip, of plastics: cellular, of polyurethanes
USA lines: 3921.13
Binding rulings for similar goods
Decisions of U.S. Customs and Border Protection (CROSS) and HMRC (Advance Tariff Rulings) on goods classified here. A ruling binds only its holder, but shows how the authorities classify similar goods. The descriptions are the authorities’ own, in English.
- N360148 U.S. CBP
The tariff classification of a quilted mattress topper and memory foam pad from China
- N357381 U.S. CBP
The tariff classification of polyurethane foam blocks from Germany
- N326755 U.S. CBP
The tariff classification and country of origin of five polyurethane foam seat pieces
- N324627 U.S. CBP
The tariff classification of foam strips from Thailand
- H265027 U.S. CBP
Internal Advice 15/009; Classification of foam friction padsPort Director U.S. Customs and Border Protection526 Water Street - Room 301Port Huron, MI 48060-5471ATTN Jane Borntrager
Legal notes
Notes
1. Throughout the nomenclature, the expression ‘plastics’ means those materials of headings 3901 to 3914 which are or have been capable, either at the moment of polymerisation or at some subsequent stage, of being formed under external influence (usually heat and pressure, if necessary with a solvent or plasticiser) by moulding, casting, extruding, rolling or other process into shapes which are retained on the removal of the external influence.
Throughout the nomenclature, any reference to ‘plastics’ also includes vulcanised fibre. The expression, however, does not apply to materials regarded as textile materials of Section XI.
2. This chapter does not cover:
(c) separate chemically defined organic compounds (Chapter 29);
(d) heparin or its salts (heading 3001);
(e) solutions (other than collodions) consisting of any of the products specified in headings 3901 to 3913 in volatile organic solvents when the weight of the solvent exceeds 50 % of the weight of the solution (heading 3208); stamping foils of heading 3212;
(f) organic surface-active agents or preparations of heading 3402;
(g) run gums or ester gums (heading 3806);
(h) prepared additives for mineral oils (including gasoline) or for other liquids used for the same purposes as mineral oils (heading 3811);
(ij) prepared hydraulic fluids based on polyglycols, silicones or other polymers of Chapter 39 (heading 3819);
(k) diagnostic or laboratory reagents on a backing of plastics (heading 3822);
(l) synthetic rubber, as defined for the purposes of Chapter 40, or articles thereof;
(m) saddlery or harness (heading 4201) or trunks, suitcases, handbags or other containers of heading 4202;
(n) plaits, wickerwork or other articles of Chapter 46;
(o) wallcoverings of heading 4814;
(p) goods of Section XI (textiles and textile articles);
(q) articles of Section XII (for example, footwear, headgear, umbrellas, sun umbrellas, walking sticks, whips, riding-crops or parts thereof);
(r) imitation jewellery of heading 7117;
(s) articles of Section XVI (machines and mechanical or electrical appliances);
(t) parts of aircraft or vehicles of Section XVII;
(u) articles of Chapter 90 (for example, optical elements, spectacle frames, drawing instruments);
(v) articles of Chapter 91 (for example, clock or watch cases);
(w) articles of Chapter 92 (for example, musical instruments or parts thereof);
(x) articles of Chapter 94 (for example, furniture, luminaires and lighting fittings, illuminated signs, prefabricated buildings);
(y) articles of Chapter 95 (for example, toys, games, sports requisites); or
(z) articles of Chapter 96 (for example, brushes, buttons, slide fasteners, combs, mouthpieces or stems for smoking pipes, cigarette-holders or the like, parts of vacuum flasks or the like, pens, propelling pencils, and monopods, bipods, tripods and similar articles).
3. Headings 3901 to 3911 apply only to goods of a kind produced by chemical synthesis, falling in the following categories:
(a) liquid synthetic polyolefins of which less than 60 % by volume distils at 300 °C, after conversion to 1013 mbar when a reduced-pressure distillation method is used (headings 3901 and 3902);
(b) resins, not highly polymerised, of the coumarone-indene type (heading 3911);
(c) other synthetic polymers with an average of at least five monomer units;
(d) silicones (heading 3910);
(e) resols (heading 3909) and other prepolymers.
4. The expression ‘copolymers’ covers all polymers in which no single monomer unit contributes 95 % or more by weight to the total polymer content.
For the purposes of this chapter, except where the context otherwise requires, copolymers (including co-polycondensates, co-polyaddition products, block copolymers and graft copolymers) and polymer blends are to be classified in the heading covering polymers of that comonomer unit which predominates by weight over every other single comonomer unit. For the purposes of this note, constituent comonomer units of polymers falling in the same heading shall be taken together.
If no single comonomer unit predominates, copolymers or polymer blends, as the case may be, are to be classified in the heading which occurs last in numerical order among those which equally merit consideration.
5. Chemically modified polymers, that is those in which only appendages to the main polymer chain have been changed by chemical reaction, are to be classified in the heading appropriate to the unmodified polymer. This provision does not apply to graft copolymers.
6. In headings 3901 to 3914, the expression ‘primary forms’ applies only to the following forms:
(a) liquids and pastes, including dispersions (emulsions and suspensions) and solutions;
(b) blocks of irregular shape, lumps, powders (including moulding powders), granules, flakes and similar bulk forms.
7. Heading 3915 does not apply to waste, parings and scrap of a single thermoplastic material, transformed into primary forms (headings 3901 to 3914).
8. For the purposes of heading 3917, the expression ‘tubes, pipes and hoses’ means hollow products, whether semi-manufactured or finished products, of a kind generally used for conveying, conducting or distributing gases or liquids (for example, ribbed garden hose, perforated tubes). This expression also includes sausage casings and other lay-flat tubing. However, except for the last mentioned, those having an internal cross-section other than round, oval, rectangular (in which the length does not exceed one-and-a-half times the width) or in the shape of a regular polygon are not to be regarded as tubes, pipes and hoses but as profile shapes.
9. For the purposes of heading 3918, the expression ‘wall or ceiling coverings of plastics’ applies to products in rolls, of a width not less than 45 cm, suitable for wall or ceiling decoration, consisting of plastics fixed permanently on a backing of any material other than paper, the layer of plastics (on the face side) being grained, embossed, coloured, design-printed or otherwise decorated.
10. In headings 3920 and 3921, the expression ‘plates, sheets, film, foil and strip’ applies only to plates, sheets, film, foil and strip (other than those of Chapter 54) and to blocks of regular geometric shape, whether or not printed or otherwise surface-worked, uncut or cut into rectangles (including squares) but not further worked (even if when so cut they become articles ready for use).
11. Heading 3925 applies only to the following articles, not being products covered by any of the earlier headings of sub-chapter II:
(a) reservoirs, tanks (including septic tanks), vats and similar containers, of a capacity exceeding 300 litres;
(b) structural elements used, for example, in floors, walls or partitions, ceilings or roofs;
(c) gutters and fittings therefor;
(d) doors, windows and their frames and thresholds for doors;
(e) balconies, balustrades, fencing, gates and similar barriers;
(f) shutters, blinds (including venetian blinds) and similar articles and parts and fittings thereof;
(g) large-scale shelving for assembly and permanent installation, for example, in shops, workshops, warehouses;
(h) ornamental architectural features, for example, flutings, cupolas, dovecotes; and
(ij) fittings and mountings intended for permanent installation in or on doors, windows, staircases, walls or other parts of buildings, for example, knobs, handles, hooks, brackets, towel rails, switch-plates and other protective plates.
HTS code 3921.13.50 is a line of the Harmonized Tariff Schedule of the United States under HS subheading 3921.13 (other plates, sheets, film, foil and strip, of plastics).
The general duty is 4.2%, and quantities are declared in kg.
For the same subheading, the UK duty is 6%, the EU duty is 6.5%, the Türkiye duty is 6.5%, the Canada duty is free, the Mexico duty is 7%, the Brazil duty is 0%–14.4%, the Argentina duty is 0%–16%, the Peru duty is 6%, the New Zealand duty is 5%, the Japan duty is 4.8%, the Taiwan duty is 1%–5%, the GCC duty is 5%, the Switzerland duty is free, the Norway duty is free, the North Macedonia duty is 6.5% and the Nigeria duty is 10%.
The United States imported goods of subheading 3921.13 worth US$344.6m in 2024; the largest supplier was Mexico.
Questions and answers
What is the USA import duty for HTS code 3921.13.50?
The general duty in the Harmonized Tariff Schedule of the United States is 4.2%; the supplementary unit is kg. Preferential rates for goods from agreement countries, anti-dumping duties and VAT are not included.
Is there a lower rate for 3921.13.50 under US trade agreements?
Yes. The Special column reads “Free (A*,AU, BH, CL, CO,D,E, IL, JO, KR, MA, OM,P, PA, PE,S, SG)”: the letters in brackets name the agreements and programmes that grant it.
Where does the United States import these goods from?
For subheading 3921.13 as a whole, the largest supplier in 2024 was Mexico (US$66.6m), followed by Canada.