Insulating Felt Paperboard
Insulating felt paperboard is a low-density felt paperboard designed for thermal and acoustic insulation in building walls and machinery. Its interlaced fibres trap air, providing insulation properties. As an uncoated felt paperboard not further worked than specified in Chapter Note 3, it falls under tariff item 4805.50.00, provided it is in rolls or sheets meeting Chapter Note 8 dimensions.
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 insulating felt paperboard weighs 150 g/m² or less
Subheading 4805.91 covers other uncoated paper weighing 150 g/m² or less, which may apply to lighter insulating products.
If the felt paperboard is coated or treated with fire retardants or other chemicals
Chemical treatments beyond surface sizing would move the product to heading 48.11.
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
• Confirm the product is not coated or laminated with other materials, as that would exclude it from heading 48.05
• Ensure the rolls or sheets exceed the size thresholds in Chapter Note 8 (over 36 cm wide, or over 36 cm by 15 cm)
• Be prepared to provide technical specifications showing the felted fibre structure if CBSA questions the classification
Related Products under Tariff item 4805.50.00
Acoustic Ceiling Tile Felt Paper
Acoustic ceiling tile felt paper is a felted paperboard base layer used in the manufacture of acoustic ceiling tiles. Its fibrous, porous structure provides sound absorption before any final surfacing is applied. It is classifiable under tariff item 4805.50.00 as felt paper and paperboard, being uncoated and not further worked than specified in Chapter Note 3.
Asphalt Saturated Felt Paperboard
Asphalt saturated felt paperboard is a dense felt paperboard that has been saturated with asphalt, making it suitable as a waterproofing underlayment in roofing. Although it is felt paperboard, the asphalt saturation constitutes a treatment beyond the processing allowed for heading 48.05 under Chapter Note 3. Therefore, it does not fall under tariff item 4805.50.00 and would be classified elsewhere, such as in Chapter 68 or under a heading for bituminous products.
Bookbinding Grayboard Felt
Bookbinding grayboard felt is a recycled fibre felt paperboard used for rigid book covers and spines. It is uncoated and not further worked than specified in Chapter Note 3, and its felted structure qualifies it as felt paperboard. It falls under tariff item 4805.50.00 as felt paper and paperboard, provided it is in rolls or sheets as required by Chapter Note 8.
Gasket Felt Paper Sheets
Gasket felt paper sheets are compressed felt paper products cut for use as flat gaskets in automotive and machinery applications. While they are felt paper, they are cut to specific shapes and sizes for their end use, which goes beyond the processing allowed for heading 48.05 under Chapter Note 3. Consequently, they do not fall under tariff item 4805.50.00 and are more appropriately classified as articles of felt paper under heading 48.23 or elsewhere.
Millboard Felt Paper
Millboard felt paper is a thick, dense felted paperboard used for insulating panels, bookbinding, and gaskets. It is produced by felting wood or rag fibres and is uncoated. As long as it is not further worked than specified in Chapter Note 3 and is in rolls or sheets of the required dimensions, it falls under tariff item 4805.50.00 as felt paper and paperboard.
Rag Felt Paperboard
Rag felt paperboard is a traditional felt paperboard made from cotton rag fibres, used for artists' supports and premium gaskets. It is prized for its purity and texture. As an uncoated felt paperboard not further worked than specified in Chapter Note 3, it falls under tariff item 4805.50.00, provided it is in rolls or sheets of the required dimensions.