Dry Pressboard Insulation Panels
Sheets of dry-processed pressboard at 160 g/m², compressed without resins for battery separators and dry-type transformers. Under HTS 4805.92.20.00 as other uncoated paperboard, pressboard weight range 150-225 g/m². Not further worked beyond basic forming.
Import Duty Rates by Country of Origin
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If semi-chemical fluting type
Pressboard with >=65% unbleached hardwood semichemical fibers meeting CMT crush test goes to 4805.11.
If cigarette paper grade if thin and sulfite-based
Sulfite wrapping paper variants with >40% sulfite fibers and specific burst index classify under 4805.30.
If resin-impregnated during production
Resin-treated pressboard becomes 'other plates/sheets of plastics' if plastic content dominates.
Not sure which classification is right?
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Import Tips & Compliance
• Document dry processing method to distinguish from wet pressboard, ensuring uncoated status
• Label with exact grammage and density; customs often tests for weight compliance
Related Products under HTS 4805.92.20.00
Electrical Pressboard Insulation Sheet
Uncoated pressboard in sheets weighing 180 g/m², made from densely compressed wood fibers for high dielectric strength. Classified under HTS 4805.92.20.00 as pressboard, which is other uncoated paperboard >150 but <225 g/m², not further worked. Used primarily in transformers and electrical equipment for insulation.
Transformer Pressboard Roll
High-density pressboard in rolls at 200 g/m², produced by pressing layered paper sheets for oil-immersed transformer insulation. Fits HTS 4805.92.20.00 as uncoated pressboard in rolls or sheets, weight 150-225 g/m². Meets electrical grade standards without further processing.
High-Density Presspahn Sheet
Presspahn pressboard sheets weighing 190 g/m², made from 100% cellulose for flexible electrical insulation in motors. HTS 4805.92.20.00 covers this uncoated pressboard in specified weight range, in rolls or sheets. High Mullen burst strength confirms pressboard nature.
Motor Winding Pressboard
Flexible pressboard rollstock 175 g/m² for slot insulation in electric motors, high tensile strength uncoated. HTS 4805.92.20.00 for pressboard in this weight class, other paperboard category. Meets chapter note 3 for minimal processing.
Battery Separator Pressboard
Microporous pressboard sheets 155 g/m² uncoated, compressed for lead-acid battery separators. Falls under HTS 4805.92.20.00 as pressboard 150-225 g/m², not further worked. High purity cellulose construction.
Arc-Resistant Pressboard
Specialty pressboard at 220 g/m² for arc chutes in circuit breakers, uncoated high-density sheets. HTS 4805.92.20.00: pressboard weight 150-225 g/m², other uncoated category. Engineered for electrical arc quenching.