U.S. imports of Iron & Steel Doors, Windows, Frames & Door Thresholds (HS 730830) totaled $38.6M in August 2026, imported from 58 countries.
Importers of Iron & Steel Doors, Windows, Frames & Door Thresholds paid $13.6M in duties in August 2026, an average duty rate of 35.29% — duty actually collected as a share of the imports that cleared customs, not the published tariff schedule.
Last updated: August 2026 dataSteel doors, windows, frames, and door thresholds are widely used in commercial construction, industrial facilities, and security applications, with the US tariff schedule distinguishing between stainless steel articles (7308301000) and non-stainless variants further split by product type — windows and frames (7308305015), thresholds (7308305025), and doors (7308305050). Canada and Mexico are the leading suppliers, benefiting from integrated North American building-products supply chains, while China, Italy, and South Korea also contribute meaningfully. Section 232 tariffs apply to these steel articles, and Chinese-origin goods may carry additional Section 301 exposure. Importers should confirm whether articles are classified as complete door or window units versus structural frames, as the distinction affects both the applicable HTS line and any applicable building-code certifications required by US buyers.
AI-written summary of the official U.S. Census Bureau trade figures on this page — verify before relying on it.
3.1K import shipments a month
Door frames specifically designed to receive a door leaf — including the jamb, head, and sill — are classified under 7308.30 as frames for doors. Generic structural steel frames for buildings that are not specifically door or window frames fall under 7308.90. The intended function and design of the article, not just its shape, determines the correct heading.
Yes. Stainless steel doors, windows, and frames have their own 10-digit line (7308301000), while non-stainless articles are further subdivided by product type. The alloy composition must be confirmed from mill certifications, as stainless and non-stainless lines may carry different duty rates and different Section 232 treatment depending on any applicable exclusions.
Subheading 4 of 5 in heading 7308
Subheading 730830 · $38.6M of $515.1M
ImportsExports
Imports
$38.6MYoY · free account
Exports
$18.1MYoY · free account
12-mo low · imports
Low · free accountOver the twelve months to August 2026, the U.S. imported $442.7M of Iron & Steel Doors, Windows, Frames & Door Thresholds and exported $195.9M.
Through August 2026. Source: U.S. Census Bureau.
Imports · August 2026
origin
Canada and Mexico together supply 56% of it. China pays 73.8% duty; Netherlands 5.2%.
customs district
destination
entry
rate provision · imports
4.1% enters free of duty; duty collected equals 35.29% of imports for consumption.
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 |
|---|---|---|---|---|---|
| 7308305050 | Doors of Iron or Steel not Stainless | $28.1M | 32.28% | 94.39% | $9.1M |
| 7308301000 | Doors, Windows and Frames, and Thrshlds Stnls Stl | $7.7M | 44.06% | 100.00% | $3.4M |
| 7308305015 | Windows and Their Frames, Iron or Steel not Stnlss | $2.2M | 39.44% | 100.00% | $859K |
| 7308305025 | Thresholds for Doors, Iron or Steel not Stainless | $680K | 47.11% | 100.00% | $320K |
HS10 export codes under this HS6 parent, each with its own page. Source: U.S. Schedule B export classification.
| Code | Description | Export Value |
|---|---|---|
| 7308300000 | Drs, Wndws A Frms A Thrshlds Fr Drs, Iron or Steel | $18.1M |
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.
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