Housewrap Microporous Polypropylene Film
>- Microporous polypropylene breathable film used in construction housewrap for moisture vapor transmission. 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."
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 film is non-cellular (solid) polypropylene
Non-cellular polypropylene plates and sheets are classified under 3920.20.
If the film is presented as a complete housewrap system with fasteners
Builders' ware of plastics is classified in heading 39.25.
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
• >- Provide the film's microporous structure and moisture vapor transmission rate (MVTR) data to support the cellular classification
• Ensure the product is declared as a sheet/film, not as a finished building product, to avoid classification under a different heading
• If the film is imported with adhesive strips or fasteners, verify whether it remains classifiable as a sheet
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 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 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."
Cellular Polycarbonate Foam Panels
>- Lightweight cellular polycarbonate foam panels used for aerospace and architectural glazing applications. Polycarbonate is not one of the named plastics in other subheadings of heading 39.21, and the cellular structure qualifies these panels for classification under 3921.19.00 as "of other plastics."
Cellular PVC Foam Board Sheets
>- Rigid cellular polyvinyl chloride (PVC) foam boards used for signage, displays, and construction panels. PVC is not one of the named plastics in other subheadings of heading 39.21, and the cellular structure qualifies these boards for classification under 3921.19.00 as "of other plastics."