HS Code for Filter board

Filter board is classified under HS code 4805.40, which covers uncoated filter paper and paperboard in rolls or sheets. Chapter 48 of the Harmonized System deals with paper and paperboard, articles of paper pulp, of paper or of paperboard. Heading 4805 is a residual category for other uncoated paper and paperboard, not further worked than specified in Note 3 to this Chapter. Subheading 4805.40 is specifically reserved for filter paper and paperboard. These products are characterized by their high porosity, specific fiber composition, and absence of sizing or coating, designed to remove solid particles from liquids or gases. To qualify for this code, the material must be in its bulk form—either in large rolls or rectangular sheets. The technical requirement for 4805.40 is that the paperboard remains \"uncoated\" and in its primary manufactured dimensions. This classification is vital for industrial suppliers who provide raw filtration media to manufacturers of automotive, laboratory, or food-grade filters. The weight and thickness of the board are secondary to its functional identity as a filtration medium in an unfinished state.

Products Included

• Industrial filter paperboard in large rolls
• Laboratory-grade filter sheets (rectangular)
• Thick uncoated paperboard for liquid filtration
• Raw filter media for automotive air filters (in rolls)
• Unprocessed wine and beverage filtration boards

Common Misclassification

Filter board is often misclassified under HS code 4823.20, which covers filter paper and paperboard that has been cut to shape (such as circles or specific sizes for machines). Once the board is no longer in standard rolls or large rectangular sheets, it moves to 4823. Another common error is using HS code 8421.99, which is for parts of filtering or purifying machinery. While the board is used in such machinery, as a paper product, it must be classified in Chapter 48 unless it is a fully assembled filter element.

FAQ

What is the HS code for filter board?

The HS code for uncoated filter paper and paperboard in rolls or sheets is 4805.40.

What if the filter board is cut into circular discs?

If the filter board is cut into specific shapes like circles, it is no longer classified under 4805.40 and should be classified under HS code 4823.20.