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Cellular Polycarbonate Sheets

Multiwall cellular polycarbonate panels for roofing and glazing applications. HTS 3921.19.00.90 covers cellular sheets of other plastics (polycarbonate), excluding named polymers like polyurethane.

Import Duty Rates by Country of Origin

Origin Country	MFN Rate	Ch.99 Surcharges	Total Effective Rate
🇨🇳China	6.5%	+35.0%	41.5%
🇲🇽Mexico	6.5%	+10.0%	16.5%
🇨🇦Canada	6.5%	+10.0%	16.5%
🇩🇪Germany	6.5%	+10.0%	16.5%
🇯🇵Japan	6.5%	+10.0%	16.5%

Alternative Classifications

This product could be classified differently depending on its characteristics or intended use.

3920.51Lower: 16.5% vs 41.5%

If noncellular polycarbonate

Non-foamed versions under specific noncellular polymers of cyclic hydrocarbons.

3925.20.00Lower: 22.8% vs 41.5%

If cut to specific non-rectangular shapes

Doors, windows, reservoirs classified by function regardless of cellular nature.

3921.90.19Lower: 40.3% vs 41.5%

If sold as rigid cellular sheets

Rigid property based on density moves to rigid plastics subheading.

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Import Tips & Compliance

• Test for chemical modification; modified polymers go to 'Other' per subheading note (a)(3)

• Document rectangular presentation at import; irregular shapes may reclassify

Related Products under HTS 3921.19.00.90

PET Foam Core Sheets

Lightweight cellular polyethylene terephthalate (PET) foam sheets for sandwich panel cores in aerospace and marine applications. Falls under 3921.19.00.90 as cellular sheets of other plastics (PET predominates per polymer notes).

Cellular Acrylic Sheets

Foamed acrylic polymer sheets for signage and displays, cellular structure of other plastics. 3921.19.00.90 as acrylic predominates but no specific acrylic cellular subheading.

PS Foam Boards

Cellular polystyrene foam boards for insulation and model making. Under 3921.19.00.90 as expanded PS sheets of other plastics.

Cellular ABS Sheets

Foamed acrylonitrile-butadiene-styrene (ABS) copolymer sheets for thermoforming. 3921.19.00.90 since ABS blend doesn't meet single monomer 95% rule.

Cellular PP Sheets

Foamed polypropylene sheets for automotive and construction uses. HTS 3921.19.00.90 for cellular other plastics.

Noryl Foam Sheets

Cellular modified polyphenylene oxide (Noryl) sheets for engineering applications. 3921.19.00.90 as chemically modified other plastics.