U.S. imports of builders' ware of plastics (nesoi) (HS 392590) totaled $112.5M in August 2026, imported from 80 countries.
Importers of Builders' Ware of Plastics (NESOI) paid $9.0M in duties in August 2026, an effective tariff rate of 8.03% of the $112.5M imported — duty actually collected as a share of that value, not the published tariff schedule. Builders' Ware of Plastics (NESOI) imports of $112.5M in August 2026 ran 14% above the year-to-date monthly average of $98.4M.
Last updated: August 2026 dataClassified under a single 10-digit line (3925900000), this residual builders' ware heading captures plastic construction articles not specifically provided for elsewhere in heading 3925 — such as cable conduit fittings, corner guards, skirting boards, and similar architectural trim. Because it is a catch-all, classification here requires confirming that the article is not more specifically described under another heading (e.g., pipes and tubes under 3917, fittings under 3926, or doors/windows under 3925.20). Section 301 tariff exposure applies to imports from certain origins, making origin verification a standard compliance step.
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28.1K shipments/mo
Common examples include plastic skirting boards, cable management conduit fittings not classified as pipe fittings, corner protectors, and decorative architectural moldings. The article must be a finished builders' ware — designed for permanent or semi-permanent installation in a building — and must not be more specifically described elsewhere in the tariff schedule.
General Rule of Interpretation 3(a) requires that the more specific description prevails. If the article is described by name or function in another heading — for instance, plastic pipe fittings under 3917 or plastic handles under 3926.30 — it should be classified there rather than in the residual 3925.90 line. A binding ruling from CBP is the most reliable way to resolve ambiguous cases.
HSChapter 39
Subheading 1 of 4 in heading 3925
Subheading 392590 · $112.5M of $245.0M
ImportsExports
Imports
$112.5MYoY · free account
Exports
$29.1MYoY · free account
12-mo low · imports
YoY · free accountOver the twelve months to August 2026, the U.S. imported $1.1B of Builders' Ware of Plastics (NESOI).
Through August 2026. Source: U.S. Census Bureau.
Trade Directory
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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 |
|---|---|---|---|---|---|
| 3925900000 | Builders' Ware of Plastics,NESOI | $112.5M | 8.03% | 34.59% | $9.0M |
HS10 export codes under this HS6 parent, each with its own page. Source: U.S. Schedule B export classification.
| Code | Description | Export Value |
|---|---|---|
| 3925900000 | Builders' Ware of Plastics,NESOI | $29.1M |
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.
Imports · August 2026
origin
Canada and Mexico together supply 66% of it. China pays 42.4% duty; Canada 0.1%.
customs district
destination
entry
rate provision · imports
65.2% enters free of duty; duty collected equals 8.03% of total import value.