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U.S. imports of mattress supports (HS 940410) totaled $3.2M in July 2026, traded with 44 countries.
Importers of Mattress Supports paid $312K in duties in July 2026 — an effective duty rate of 11% on $2.7M in dutiable value, based on actual customs collections rather than the published tariff schedule.
Last updated: July 2026 dataMattress supports — including slatted bed bases, box springs, and similar foundations designed to underlie a mattress — enter the US under a single 10-digit line (9404100000), with Turkey the leading supplier followed by China and Vietnam. The product sits at the intersection of the furniture and bedding supply chains, and importers should confirm whether a given article functions as a standalone support or is sold as part of a complete bed set, since the latter may affect classification. Section 301 tariffs apply to Chinese-origin goods in this category.
AI-written summary of the official U.S. Census Bureau trade figures on this page — verify before relying on it.
431 shipments/mo
A mattress support (9404100000) is an article specifically designed to support a mattress — such as a slatted base or a box spring — and is classified in Chapter 94 heading 9404. A bed frame that merely holds the support and mattress assembly typically classifies as furniture under heading 9403. If the two are imported together as a set, classification follows the component that gives the set its essential character.
Turkey does not have a free trade agreement with the United States, so Turkish-origin mattress supports enter at the standard MFN duty rate without preferential treatment. Importers sourcing from Turkey should also monitor any applicable trade-remedy proceedings that may affect this category.
HSChapter 94
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Subheading 6 of 6 in heading 9404
Subheading 940410 · $3.2M of $266.5M
ImportsExports
Imports
$3.2MYoY · Pro
Exports
$668KYoY · 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 |
|---|---|---|---|---|---|
| 9404100000 | Mattress Supports | $4.3M | 11.99% | 95.88% | $511K |
HS10 export codes under this HS6 parent, each with its own page. Source: U.S. Schedule B export classification.
| Code | Description | Export Value |
|---|---|---|
| 9404100000 | Mattress Supports | $633K |
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
customs district
destination
entry
rate provision · imports
14.2% enters free of duty; the effective duty rate is 9.77%.