Of polymers of styrene
Other plates, sheets, film, foil and strip, of plastics: > Cellular: > Of polymers of styrene
Duty Rate (from China)
Except for products described in headings 9903.03.02–9903.03.11, articles the product of any country, as provided for in subdivision (aa) of U.S. note 2 to this subchapter
Except as provided in headings 9903.88.12, 9903.88.17, 9903.88.20, 9903.88.54, 9903.88.59, 9903.88.61, 9903.88.63, 9903.88.66, 9903.88.67, 9903.88.68, 9903.88.69, or 9903.88.70, articles the product of China, as provided for in U.S. note 20(c) to this subchapter and as provided for in the subheadings enumerated in U.S. note 20(d)
Products classified under HTS 3921.11.00.00
Styrene Expanded Polystyrene Foam Sheets
Rigid foam sheets made from expanded polystyrene (EPS), a cellular polymer of styrene, used for insulation and packaging. Classified under HTS 3921.11.00.00 as cellular plates and sheets of styrene polymers per chapter notes on polymer classification. The cellular structure provides buoyancy and thermal insulation properties.
Polystyrene Foam Insulation Panels
Extruded polystyrene (XPS) foam panels designed for building wall and roof insulation. Falls under 3921.11.00.00 as cellular sheets of styrene polymers, confirmed by predominant styrene content. Provides high R-value thermal resistance.
EPS Foam Packaging Sheets
Beadboard expanded polystyrene sheets cut to size for protective packaging of electronics and appliances. Classified in 3921.11.00.00 for cellular styrene polymer sheets used in shipping. Lightweight and shock-absorbent.
Styrene Foam Board for Model Making
High-density polystyrene foam boards used by hobbyists for architectural models and crafts. Meets 3921.11.00.00 as cellular sheets of styrene polymers per weight predominance rule. Easily cut and painted.
Cellular PS Diffusion Plates
Polystyrene foam sheets engineered as light diffusion panels for LED lighting fixtures. Under 3921.11.00.00 for cellular styrene sheets with light-scattering cellular structure. Used in commercial displays.
Polystyrene Foam Underlayment Sheets
EPS foam sheets used as flooring underlayment for sound and thermal insulation beneath laminate tiles. Classified 3921.11.00.00 as cellular styrene polymer plates. Moisture-resistant grade.
Styrene Foam Sign Blanks
Extruded polystyrene foam boards sold as blanks for outdoor signage and displays. 3921.11.00.00 for cellular sheets of styrene polymers used in advertising. Weatherproof surface.
EPS Foam Void Fill Sheets
Expanded polystyrene sheets torn by hand for void filling in shipping cartons. Pure cellular styrene polymer per 3921.11.00.00 classification rules. Biodegradable grade available.
High-Impact PS Foam Sheets
Cellular sheets of high-impact polystyrene (HIPS) for protective packaging inserts. 3921.11.00.00 as styrene polymers meeting 95% monomer content. Durable white foam.
Styrene Foam Acoustic Panels
Polystyrene foam sheets with cellular structure for sound absorption in studios/recording booths. HTS 3921.11.00.00 for styrene cellular plates before final assembly. Flame-retardant treated.
PS Foam Refrigerator Insulation Sheets
Extruded polystyrene foam sheets cut for appliance cabinet insulation during manufacturing. Cellular styrene polymer under 3921.11.00.00. High thermal efficiency.
Expandable PS Foam Billet Sheets
Large cellular polystyrene sheets sliced from billets for further fabrication into custom foam parts. 3921.11.00.00 as primary styrene foam sheets. Industrial grade.
Flame-Retardant PS Foam Sheets
Cellular polystyrene sheets with chemical modification for fire resistance in building/construction. Still 3921.11.00.00 as base styrene polymer per subheading note (c). Self-extinguishing.
Marine Buoyancy PS Foam Sheets
Closed-cell polystyrene foam sheets for boat flotation and dock bumpers. 3921.11.00.00 cellular styrene sheets with high water resistance. Marine-grade.
Architectural Foam Relief Sheets
Polystyrene foam sheets molded with surface relief patterns for facade cornices and trim. Raw cellular styrene sheets under 3921.11.00.00 before installation. Lightweight decorative.