Wet Machine Board for Ceiling Tiles
Wet machine board is a heavy uncoated paperboard weighing over 225 g/m², produced by wet forming process, used as the base material for manufacturing acoustic ceiling tiles. It falls under HTS 4805.93.40.15 as other uncoated paperboard in rolls or sheets, not further worked, meeting the weight threshold and wet machine production method. This board provides structural support and sound absorption properties in construction applications.
Import Duty Rates by Country of Origin
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If surface-coated or printed
Coated or printed paperboard falls under Chapter 48 heading 4811 for surface-worked products.
If weighing under 225 g/m²
Lighter weight uncoated paperboard classifies under lower grammage subheadings in 4805.91.
If molded into finished filter shapes
Molded or pressed paper pulp articles become 'other paper articles' in heading 4823.
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Import Tips & Compliance
• Verify grammage exceeds 225 g/m² with lab certification to confirm classification under 4805.93.40.15
• Ensure documentation proves wet machine production process to avoid reclassification as pressed board
• Check for any surface treatments that could shift to coated paperboard headings like 4810
Related Products under HTS 4805.93.40.15
Wet Laid Nonwoven Board for Filtration
Specialty wet machine board, over 225 g/m², designed for industrial air and liquid filtration media substrates. Classified in HTS 4805.93.40.15 as uncoated wet machine board not further processed beyond chapter note 3 specifications. The wet laying process creates uniform fiber distribution ideal for high-efficiency filters.
Wet Machine Battery Separator Board
High-purity wet machine board exceeding 225 g/m² used as separator material between battery electrodes. Meets HTS 4805.93.40.15 criteria for uncoated paperboard produced by wet machine process in rolls or sheets. Provides electrical insulation and electrolyte permeability essential for battery performance.
Wet Laid Technical Board for Gaskets
Wet machine board over 225 g/m² serving as base material for manufacturing industrial gaskets and seals. Classified under HTS 4805.93.40.15 as other uncoated heavy paperboard not further worked per chapter specifications. Offers compressibility and sealability when combined with subsequent processing.
Wet Machine Board for Wall Coverings
Heavyweight wet machine board >225 g/m² used as liner or substrate for decorative wall covering materials. Falls under HTS 4805.93.40.15 as uncoated paperboard in rolls, suitable for building applications requiring moisture resistance. Provides smooth surface for vinyl or textile wallcoverings.
Wet Laid Absorbent Core Board
Wet machine board designed for absorbent cores in hygiene products, weighing more than 225 g/m² uncoated. HTS 4805.93.40.15 covers this as other heavy paperboard produced by wet process in rolls or sheets. High absorbency from specialized pulp blends for disposable applications.
Wet Machine Electrical Insulation Board
Uncoated wet machine board >225 g/m² for electrical insulation in transformers and motors. Precisely classified HTS 4805.93.40.15 as heavy other paperboard not further worked. High dielectric strength from purified wood pulp composition.