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U.S. imports of swivel seats with variable height adjustment (nesoi) (HS 940139) totaled $91.7M in July 2026, traded with 52 countries.
Importers of Swivel Seats with Variable Height Adjustment (NESOI) paid $8.2M in duties in July 2026 — an effective duty rate of 16% on $50.9M in dutiable value, based on actual customs collections rather than the published tariff schedule.
Last updated: July 2026 dataHeight-adjustable swivel seats with frames other than wood — primarily metal-base office chairs, drafting stools, and ergonomic task chairs — are the dominant product type in this residual subheading. Vietnam leads US imports under this heading, followed by Mexico and China; goods of Chinese origin are subject to Section 301 tariffs, which has accelerated sourcing shifts toward Vietnam and Mexico in recent years. The US schedule further subdivides this heading into household swivel seats (9401390010) and other swivel seats (9401390030), a distinction relevant to antidumping scope determinations and retail classification.
AI-written summary of the official U.S. Census Bureau trade figures on this page — verify before relying on it.
23.1K shipments/mo
The household subdivision (9401390010) covers swivel seats with variable height adjustment intended for residential use, while 9401390030 captures commercial and institutional equivalents. The distinction matters because antidumping orders on certain seating products have historically defined scope by end-use category, and misclassification between these lines can affect AD/CVD liability. Importers should document the intended market channel and product specifications to support their line-level classification.
Yes. As manufacturers relocated assembly to Vietnam to avoid Section 301 tariffs, CBP increased scrutiny of whether Vietnamese-assembled chairs undergo sufficient substantial transformation to qualify as Vietnamese-origin goods. If key components such as seat mechanisms, gas cylinders, or bases are sourced from China and merely assembled in Vietnam without meaningful manufacturing operations, CBP may determine the country of origin remains China. Importers should conduct a thorough origin analysis and maintain detailed production records.
HSChapter 94
Subheading 5 of 16 in heading 9401
Subheading 940139 · $91.7M of $1.9B
Supplier Network
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ImportsExports
Imports
$91.7MYoY · Pro
Exports
$13.3MYoY · Pro
12-mo low · imports
YoY · ProThrough July 2026. Source: U.S. Census Bureau.
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 |
|---|---|---|---|---|---|
| 9401390030 | Swivel Seats With Variable Height Adjustment, Neso | $84.8M | 8.53% | 56.51% | $7.2M |
| 9401390010 | Househld Swivel Seats W Variable Hgt Adjust, NESOI | $10.2M | 12.74% | 96.69% | $1.3M |
HS10 export codes under this HS6 parent, each with its own page. Source: U.S. Schedule B export classification.
| Code | Description | Export Value |
|---|---|---|
| 9401390000 | Swivel Seats With Variable Height Adjustment, Neso | $14.6M |
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 · July 2026
origin
Mexico and Vietnam together supply 67% of it.
customs district
destination
entry
rate provision · imports
44.2% enters free of duty; the effective duty rate is 8.97%.