U.S. imports of Swivel Seats with Variable Height Adjustment (NESOI) (HS 940139) totaled $94.6M in August 2026, imported from 56 countries.
Importers of Swivel Seats with Variable Height Adjustment (NESOI) paid $10.5M in duties in August 2026, an average duty rate of 11.11% — duty actually collected as a share of the imports that cleared customs, not the published tariff schedule.
Last updated: August 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.
22.5K import shipments a month
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.
Subheading 6 of 16 in heading 9401
Subheading 940139 · $94.6M of $1.9B
ImportsExports
Imports
$94.6MYoY · free account
Exports
$13.3MYoY · free account
12-mo low · imports
Low · free accountOver the twelve months to August 2026, the U.S. imported $1.1B of Swivel Seats with Variable Height Adjustment (NESOI) and exported $179.6M.
Through August 2026. Source: U.S. Census Bureau.
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HS10 import codes under this HS6 parent, each with its own page. Source: U.S. Harmonized Tariff Schedule.
| Code | Description | Imports for consumption | Average duty rate | Dutiable Share | Duty Collected |
|---|---|---|---|---|---|
| 9401390030 | Swivel Seats With Variable Height Adjustment, Neso | $87.8M | 10.65% | 57.54% | $9.3M |
| 9401390010 | Househld Swivel Seats W Variable Hgt Adjust, NESOI | $6.9M | 17.10% | 94.67% | $1.2M |
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 | $13.3M |
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
Vietnam and Mexico together supply 64% of it. China pays 37.4% duty; Mexico 0.9%.
customs district
destination
entry
rate provision · imports
39.5% enters free of duty; duty collected equals 11.11% of imports for consumption.