Noryl Foam Sheets
Noryl foam sheets are cellular sheets made from modified polyphenylene oxide (PPO), a high-performance engineering plastic known for heat resistance and dimensional stability. They are classified under 3921.19.00 because the chemical modification of the polymer places them in the 'other plastics' category, as no specific subheading covers modified PPO.
Import Duty Rates by Country of Origin
| Origin Country | MFN Tariff | Surtaxes | Total Effective Rate |
|---|---|---|---|
| 🇨🇳China | Free | — | Free |
| 🇲🇽Mexico | Free | — | Free |
| 🇺🇸United States | Free | — | Free |
| 🇩🇪Germany | Free | — | Free |
| 🇯🇵Japan | Free | — | Free |
More Specific Codes
This product may fall under a more specific subheading:
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If the sheets are non-cellular and made of other plastics
Non-cellular sheets of other plastics are classified under this subheading.
If the sheets are cut into specific articles
Articles cut from sheets may be classified as other plastic articles.
Not sure which classification is right?
The Tariff Assistant works through the GRI rules on your specific product to reach the right tariff item — and can price the duty on it in the same conversation.
Import Tips & Compliance
• Document the chemical modification process and the base polymer to support classification under 'other plastics'
• Confirm the sheets are cellular (foamed) and not solid, as solid sheets would fall under different tariff items
• Keep technical datasheets available for CBSA inspection
Related Products under Tariff item 3921.19.00
Battery Grade PP Microporous Membrane
>- High-purity microporous polypropylene membrane used as a lithium-ion battery separator, with controlled pore distribution. This is a cellular (microporous) sheet of polypropylene, which is not one of the named plastics in other subheadings of heading 39.21, so it falls under 3921.19.00 as "of other plastics."
Breathable PE Diaper Backing Film
>- Microporous polyethylene film used as a soft, breathable backsheet in disposable diapers. This is a cellular (microporous) sheet of polyethylene, which is not one of the named plastics in other subheadings of heading 39.21, so it falls under 3921.19.00 as "of other plastics."
Cellular ABS Sheets
Foamed acrylonitrile-butadiene-styrene (ABS) copolymer sheets for thermoforming applications. Since ABS is a copolymer where no single monomer unit contributes 95% or more by weight, it is classified under tariff item 3921.19.00 as a cellular sheet of 'other plastics'.
Cellular Acrylic Foam Tapes Base Sheets
>- Double-sided cellular acrylic polymer foam sheets used as a carrier for pressure-sensitive adhesive tapes. These sheets are cellular (foamed) and made of acrylic polymer, which is not one of the named plastics in other subheadings of heading 39.21, so they fall under tariff item 3921.19.00 as "of other plastics."
Cellular Acrylic Sheets
Foamed acrylic polymer sheets for signage and displays, with a cellular structure. As acrylic polymers are not specifically named in cellular subheadings, these sheets are classified under tariff item 3921.19.00 as 'of other plastics'.
Cellular Polyamide Foam Sheets
>- Cellular polyamide (nylon) foam sheets used for impact protection and vibration damping in machinery. Polyamide is not one of the named plastics in other subheadings of heading 39.21, and the cellular structure qualifies these sheets for classification under 3921.19.00 as "of other plastics."