Polystyrene Rigid Sheet
A noncellular, rigid sheet made from polystyrene polymer, used for signage and display fabrication. It falls under HTS 3920.30.00.00 as it is a plate, sheet, or strip of polymers of styrene, not reinforced or laminated with other materials. The polystyrene content exceeds 95% by weight, meeting the chapter's polymer classification rules.
Import Duty Rates by Country of Origin
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If made from less than 95% styrene polymer blended with other monomers
Copolymers or blends where styrene does not predominate by weight classify under other plastics per subheading note (a)(4).
If flexible and used for packaging
Flexible polystyrene sheets for packaging may fall under cellular or noncellular plastic sheets of heading 3921.
If chemically modified beyond standard polystyrene
Chemically modified polymers classify in 'Other' but could shift if more specific to ethylene polymers.
Not sure which classification is right?
The Tariff Assistant works through the GRI rules on your specific product to reach the right HTS code — and can price the duty on it in the same conversation.
Import Tips & Compliance
• Verify polystyrene monomer content is at least 95% by weight via lab testing to confirm classification under polymers of styrene
• Ensure declaration specifies 'noncellular and not reinforced' to avoid misclassification into laminated categories
Related Products under HTS 3920.30.00.00
Clear Polystyrene Display Film
Transparent, noncellular polystyrene film for point-of-purchase displays and packaging inserts. HTS 3920.30.00.00 applies to such unsupported films of styrene polymers. High clarity due to pure polystyrene composition.
HIPS Thermoforming Sheet
High impact polystyrene sheets vacuum-formed into trays and containers, imported as flat stock. Under HTS 3920.30.00.00 for noncellular styrene sheets not yet formed. Predominant styrene per notes.
Polystyrene Prototype Sheet
White polystyrene sheets for rapid prototyping and 3D printing bases, non-supported. HTS 3920.30.00.00 for styrene polymer plates used in industrial prototyping.
Styrene Block Sheet
Extruded block sheets of general purpose polystyrene for fabrication. Noncellular, HTS 3920.30.00.00.
GPPS Transparent Foil
General purpose polystyrene thin foil for graphic arts. HTS 3920.30.00.00 noncellular.
Polystyrene Laser Cuttable Sheet
Sheets optimized for laser cutting in signage, styrene polymer. HTS 3920.30.00.00.