U.S. imports of cellular polystyrene plates, sheets, film, foil & strip (HS 392111) totaled $14.4M in August 2026, imported from 46 countries.
Importers of Cellular Polystyrene Plates, Sheets, Film, Foil & Strip paid $621K in duties in August 2026, an effective tariff rate of 4.31% of the $14.4M imported — duty actually collected as a share of that value, not the published tariff schedule.
Last updated: August 2026 dataExpanded and extruded polystyrene (EPS/XPS) in flat form — used extensively in construction insulation, protective packaging, and cold-chain applications — enters the US under a single 10-digit line (3921110000). Canada and Mexico together account for the dominant share of US imports, a pattern driven by integrated North American supply chains and USMCA-eligible production. Germany is a notable additional source for higher-specification extruded grades used in building envelope applications.
AI-written summary of the official U.S. Census Bureau trade figures on this page — verify before relying on it.
1.1K shipments/mo
Cellular (foam) forms — whether expanded bead-type EPS or extruded XPS — classify under heading 3921, while non-cellular polystyrene sheet and film classify under heading 3920. The presence of a closed- or open-cell foam structure is the operative distinction; density and compressive-strength data from the manufacturer typically confirm cellular character.
While federal customs entry does not require a special permit for polystyrene foam sheet, importers should be aware that several US states have enacted restrictions or bans on certain polystyrene foam products for food-service use. Compliance with destination-state regulations is separate from federal HTS classification and should be verified before distribution.
HSChapter 39
Subheading 5 of 6 in heading 3921
Subheading 392111 · $14.4M of $317.7M
Trade Directory
List your company under HS 392111 — Cellular Polystyrene Plates, Sheets, Film, Foil & Strip, so the companies trading it can find you. Be the first supplier listed.
HS10 import codes under this HS6 parent, each with its own page. Source: U.S. Harmonized Tariff Schedule.
| Code | Description | Import Value | Effective Tariff % | Dutiable Share | Duty Collected |
|---|---|---|---|---|---|
| 3921110000 | Plates,Sheets,Film,Foil,Strip,Cell,Plym of Styrene | $14.4M | 4.31% | 31.95% | $621K |
HS10 export codes under this HS6 parent, each with its own page. Source: U.S. Schedule B export classification.
| Code | Description | Export Value |
|---|---|---|
| 3921110000 | Plates,Sheets,Film,Foil,Strip,Cell,Plym of Styrene | $11.9M |
Import lines come from the U.S. Harmonized Tariff Schedule and export lines from Schedule B. The two are numbered by different agencies, so the same 10-digit code can appear in both tables describing a different product.
ImportsExports
Imports
$14.4MYoY · free account
Exports
$11.9MYoY · free account
12-mo low · imports
YoY · free accountOver the twelve months to August 2026, the U.S. imported $155.3M of Cellular Polystyrene Plates, Sheets, Film, Foil & Strip.
Through August 2026. Source: U.S. Census Bureau.
Imports · August 2026
origin
Canada and Germany together supply 72% of it. Germany pays 10.1% duty; Canada <0.1%.
customs district
destination
entry
rate provision · imports
68.0% enters free of duty; duty collected equals 4.31% of total import value.