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US United States only. Duty and rules for goods made in China and entered into the US. Importing somewhere else? Duty by country

Aluminum windows from China into the US: 63.2% duty before AD/CVD. AD/CVD only if frames, parts or loose glass are in scope. NFRC and NAFS labels required, plus Florida approval or a Miami-Dade NOA for impact.

Duty from China for entries on 2026-11-06 · rates checked 2026-10-18

Aluminum doors, windows and their frames, and thresholds for doors

HTS 7610.10.00 · stat .10 Windows and their frames; .20 Thresholds for doors; .30 Other (aluminum doors and door frames report here)

Before AD/CVD 63.2%
Duty layers for HTS 7610.10.00 from China
Layer Rate
Base rate (MFN) HTSUS 2026 Rev. 21, 7610.10.00 5.7%
Section 301 9903.88.15 HTSUS Chapter 99, heading 9903.88.15 and U.S. note 20(r)-(s) (Rev. 21) 7.5%
Section 232 9903.82.02 Proclamation 11021, 91 FR 18201 Due for re-check 50%
Total before AD/CVD 63.2%
May also apply
  • A-570-967 / C-570-968 Aluminum extrusions (profiles, including window, door and curtain-wall parts): +93.38% for an exporter without its own rate, if your goods are in scope. A finished-goods kit is out only if it holds every part needed to assemble the final product and needs no cutting or punching. Kits are a frequent dispute.
  • A-570-188 / C-570-189 Float glass products (architectural flat glass, IGUs, tempered and laminated glass): +201.27% for an exporter without its own rate, if your goods are in scope. Origin is where the glass was floated. Chinese glass tempered or laminated in a third country is still in scope.

Entry fees, not in the total MPF 0.3464%, minimum $34.58, maximum $670.86 per entry (CBP Dec. 26-14, customs user fees for FY2027, 91 FR 48398); HMF 0.125%, ocean entries only (19 CFR 24.24).

Not charged 2026 forced-labor Section 301 (9903.05.31, +12.5%): not charged on goods that pay Section 232; IEEPA (ended): ended after 2026-02-23; Section 122 (ended): ended after 2026-07-23.

Rows without their own date checked Every row checked on or after Some rows are due for re-check

Section 301 on this line is List 4A, not List 3: HTS 7610.10.00 is listed in U.S. note 20(s), heading 9903.88.15, at 7.5%. List 3 goods pay 25%. Statistical suffixes: .10 windows and their frames, .20 door thresholds, .30 other, which is where aluminum doors and door frames report.

What the directories show for China

Checked
  • ~94NFRC CPDChinese-named, of 757 makersmanufacturers with a Chinese city or province in the name. Name check of the Manufacturer list on search.nfrc.org. A Chinese plant listed under an English brand name is not counted.
  • 0FGIA (NAFS)Chinese-named, of 101 namesmanufacturers with a Chinese company or place name. Name check, 2026-10-18, of the 101 names in the directory's Manufacturer search list against Chinese province and major-city names. The directory's plant codes are numbers and show no location, so a Chinese plant under an English brand name would be missed.
  • 0WDMA Hallmark (NAFS)Chinese-named, of about 130manufacturers with a Chinese company or place name. Name check, 2026-10-18, of about 130 names in the Hallmark manufacturer list. Not a plant-address search, so a Chinese plant under an English brand name would be missed.
  • 148SGCC (safety glass)plants in China, of 710glass plants with Country listed as China. Count of plants whose listed country is China in the plant list behind the SGCC product search. Counts by listed location, not by name.

How these were counted:Counts only; no names are copied. NFRC, FGIA and WDMA counts are name checks, so a Chinese plant under an English brand name is missed. SGCC counts plants by listed country. NAFS: only FGIA and WDMA Hallmark were checked; NAMI, Keystone and QAI also certify NAFS and were not checked. Ask which certifier issued the NAFS label and search that certifier's own directory.

A-570-967 / C-570-968 Aluminum extrusions
+93.38% if in scope
A-570-188 / C-570-189 Float glass products
+201.27% if in scope

AD + CVD cash deposit for an exporter without its own rate.

Worst case for complete windows with Chinese IGUs: if A-570-188 reaches installed glass (unconfirmed), AD/CVD of 201.27% applies to the glass value. At an example 25% glass share the entry pays 113.52%, not 63.2%.

  • Specify float glass made outside China, with the float mill’s origin certificate on the invoice.
  • Before the PO, have your broker search CBP rulings or file a scope ruling request with Commerce. CBP CROSS rulings

Before you order

  1. Check the order's written scope against your exact product. Scope by product →
  2. Get the exporter and producer legal names and match them to the AD/CVD rates. Rates by exporter →
  3. Ask for the NFRC, NAFS, FL Product Approval, Miami-Dade NOA identifiers and look each one up yourself. Lookup steps →
Send an RFQ Price your quote Data checked
Certificates to check

HTS 7610.10.00 covers aluminum windows, doors, their frames and door thresholds. This page prices the line from China, shows which shipments pick up AD/CVD, and walks through checking a factory's NFRC and NAFS listings yourself.

Build your shortlist from the NFRC directory

The directory is public and free. Run every factory on your shortlist through these five steps, and send it the request below, before you compare prices.

We don't print the names: NFRC's terms of use bar non-members from scraping or republishing directory data without NFRC's written permission. NFRC Terms of Use. The live directory is the better source anyway. A line drops out of the manufacturer search the day its certification lapses. When we checked: 757 manufacturers on 2026-10-18, about 94 with a Chinese city or province in the name. That is a name check: a Chinese plant listed under an English brand name is not counted. Only currently certified products appear in the manufacturer and type searches.

Five-step lookup for one factory

  1. Step 1: Open Search by Manufacturer. search.nfrc.org/search/cpd/cpd_search_default_ByMfr.aspx

    The Manufacturer list holds only companies with currently certified products. Many Chinese factories carry their city or province in the name (Foshan, Guangdong, Shandong, Hebei), so scan for those.

  2. Step 2: Pick the name printed on the factory's label, then the product type under Available products.

    If the label shows a different company than the factory quoting you, that company is a private labeler. NFRC lets its name go on the label and in the directory while the manufacturer holds the authorization. You need the letter that ties the line to the factory.

  3. Step 3: Narrow to the line on your quote with the directory's own filters.

    • Series (the product line)
    • Frame and sash material
    • Number of panes
    • Low-E coating and the surface it sits on
    • Spacer and gap fill
    • Grid and divider

  4. Step 4: Read the ratings for that exact glazing option and note the line's CPD number.

    • U-factor
    • Solar heat gain coefficient (SHGC)
    • Visible transmittance (VT)
    • Short CPD number of the line, format AAA-X-11

  5. Step 5: Enter the full CPD number from the label photo in Label Verification. search.nfrc.org/search/search_full_cpdnum.aspx

    • Format AAA-X-11-01234-01234. The first three parts (AAA-X-11) are the product-line code, the same kind of number as the short form in step 4; the two five-digit groups pick out one rated product in that line. Use leading zeros.
    • It also returns historical labels, so confirm the line still shows in step 3.

What a temporary NFRC label carries

Manufacturer
Factory or private-label name
Product
Series, operator type, frame material, glazing
CPD number
AAA-X-11-01234-01234
U-factor (U.S./I-P)
0.xx
Solar heat gain coefficient
0.xx
Visible transmittance
0.xx
Field layout only. The values are placeholders, not a real product. Every value on the label has to match the directory entry for the same CPD number.

Storefront, curtain wall and other site-built commercial products don't carry a per-unit label the same way. NFRC rates them through its commercial program and a Commercial Label Certificate, and is moving manufacturers off its older Component Modeling Approach (CMA). On a commercial job, ask for the project's NFRC Label Certificate. NFRC commercial certification NFRC commercial: for manufacturers (CMA transition)

Directory pages checked NFRC CPD: search by manufacturer, NFRC CPD: Label Verification (full CPD number), NFRC CPD: search by CPD number, NFRC CPD code listing (product type codes), NFRC Terms of Use (CPD data, non-member restrictions), NFRC commercial certification

Send this to the factory

Paste this into your RFQ or first email. A factory that already ships US projects answers it from its files.

  1. 1. The full NFRC CPD number (format AAA-X-11-01234-01234) for each product line and glazing option on your quote. You enter it in Label Verification and compare U-factor, SHGC and VT.
  2. 2. A photo of the NFRC temporary label from a current production lot, not a brochure image. NFRC treats an unlabeled product as not certified.
  3. 3. If the CPD listing is under another company's name: that company's name and its letter authorizing your plant to build the line. Private labels are allowed. The plant still has to trace back to the authorization.
  4. 4. NAFS: a photo of the certification label, the name of the certifier that issued it (FGIA, WDMA Hallmark, Keystone, NAMI or QAI) and its listing number, such as the FGIA manufacturer code (like XYZ-1) or the WDMA Hallmark number (###-H-###). If you only hold a NAFS test report, say so and send the lab report number. A test report has no plant audit and is not certification. The code asks for a NAFS label.
  5. 5. For Florida jobs, the FL# and product name as listed. For Miami-Dade or Broward, the NOA number. Approvals belong to the listed manufacturer or applicant, not to whoever resells the product.
  6. 6. The SGCC number etched on tempered panes, and the name of the glass plant. The safety-glazing mark has to tie to a listed plant.
  7. 7. Where the aluminum profiles were extruded and where the float glass was made. Both set AD/CVD exposure. Chinese profiles finished in Vietnam count as Chinese.
  8. 8. Shop drawings per opening (profile series, wall thickness, thermal break, glazing makeup, hardware) and invoice wording that says whether units ship complete or as frames and parts. The CPD line and NAFS rating have to match the drawings, and AD/CVD scope turns on what ships.

What the duty does to one entry

HTS 7610.10.00 from China, ocean freight, an exporter without its own AD/CVD rate. Change the value to match your quote.

Add freight in the calculator
Duty and fees on one entry, by scope scenario
On one entry Complete windows and doors, glazed and ready to install Profiles, frame and sash parts shipped loose Subassemblies, e.g. a frame with hardware fitted Complete windows, Chinese float glass in IGUs (if A-570-188 reaches it)
Entered value $10,000.00$10,000.00$10,000.00$10,000.00
Base rate (MFN) $570.00 5.7% $570.00 5.7% $570.00 5.7% $570.00 5.7%
Section 301 $750.00 7.5% $750.00 7.5% $750.00 7.5% $750.00 7.5%
Section 232 $5,000.00 50% $5,000.00 50% $5,000.00 50% $5,000.00 50%
AD A-570-967 n/a $8,601.00 86.01% $3,440.40 86.01% on 40% of value n/a
CVD C-570-968 n/a $737.00 7.37% $294.80 7.37% on 40% of value n/a
AD A-570-188 n/a n/a n/a $4,538.00 181.52% on 25% of value
CVD C-570-189 n/a n/a n/a $493.75 19.75% on 25% of value
Duty $6,320.00 63.2% $15,658.00 156.58% $10,055.00 100.55% $11,352.00 113.52%
MPF 0.3464%, minimum $34.58, maximum $670.86 per entry, FY2027. CBP Dec. 26-14, customs user fees for FY2027, 91 FR 48398 $34.64$34.64$34.64$34.64
HMF 0.125%, ocean entries only. 19 CFR 24.24 $12.50$12.50$12.50$12.50
Landed before freight $16,367.14$25,705.14$20,102.14$21,399.14
Each $1.00 of entered value lands at $1.64$2.57$2.01$2.14
What each column assumes
  • Complete windows and doors, glazed and ready to install: Finished goods are outside the extrusion order. Whether installed IGUs are reached by the float glass order is unconfirmed.
  • Profiles, frame and sash parts shipped loose: Inside the extrusion order and charged on the full value, at the rate for an exporter without its own rate.
  • Subassemblies, e.g. a frame with hardware fitted: In scope, but AD/CVD is charged on the aluminum extrusion content only. 40% is an example share; use the extrusion line in the factory cost breakdown.
  • Complete windows, Chinese float glass in IGUs (if A-570-188 reaches it): Worst case, unconfirmed. Only the glass would be in scope, so AD/CVD is charged on the glass share of the entered value. 25% is an example share; use the glass line from the factory cost breakdown.

Both shares are examples; change them to match the factory cost breakdown. Freight, brokerage and inland costs are in the full calculator.

Not aluminum? Vinyl and wood windows

NFRC, NAFS and the Florida approvals work the same way for uPVC and wood windows. The duty does not.

Duty before AD/CVD on window lines from China
Line Before AD/CVD
Aluminum doors, windows and their frames, and thresholds for doors HTS 7610.10.00 Base rate 5.7% + Section 301 7.5% + Section 232 50% AD/CVD: A-570-967, A-570-188 if in scope 63.2%
Plastic (uPVC/vinyl) doors, windows and their frames, and thresholds for doors HTS 3925.20.00 Base rate 5.3% + Section 301 7.5% + 2026 forced-labor Section 301 12.5% AD/CVD: no order in our data for this line 25.3%
Wood windows, French windows and their frames, of non-tropical wood HTS 4418.19.00 Base rate 3.2% + Section 301 25% + 2026 forced-labor Section 301 12.5% AD/CVD: A-570-117 if in scope 40.7%

When AD/CVD reaches the order

AD/CVD on this line turns on what crosses the border, not on what the factory calls it. Each row cites the order or ruling that decides it.

  • A-570-967 / C-570-968 Aluminum extrusions In force since 2011-05-26. When in scope: AD 86.01% + CVD 7.37% for an exporter without its own rate. Checked
  • A-570-188 / C-570-189 Float glass products In force since 2026-04-06. When in scope: AD 181.52% + CVD 19.75% for an exporter without its own rate. Checked
  • Complete windows and doors, glazed and ready to install A-570-967 Out Finished goods are excluded from the extrusion scope. AD order, 76 FR 30650
  • Finished-goods kit A-570-967 Depends Out only if the kit holds every part needed to assemble the final unit and needs no cutting or punching. Kits are a frequent dispute. AD order, 76 FR 30650
  • Frame, sash and mullion profiles, other parts, incomplete kits A-570-967 In scope +93.38% Parts for windows, doors and curtain walls are named in the scope. AD order, 76 FR 30650
  • Subassemblies, for example a frame with hardware fitted A-570-967 In scope +93.38% In scope. Only the extrusion content is dutiable. AD order, 76 FR 30650
  • Door thresholds A-570-967 In scope +93.38% Held in scope in the amended rulings after the Worldwide Door decision. 90 FR 11943
  • Profiles extruded in China, finished in Vietnam A-570-967 In scope +93.38% Treated as Chinese under the circumvention finding. 84 FR 39805
  • Loose IGUs, tempered or laminated glass, at least 2.0 mm thick and 0.37 m² A-570-188 In scope +201.27% Named in the float glass scope. AD order, 91 FR 17250
  • Chinese float glass tempered, laminated or built into IGUs in a third country A-570-188 In scope +201.27% Origin is where the glass was floated, not where it was processed. AD order, 91 FR 17250
  • IGUs installed in complete imported windows A-570-188 Unconfirmed Not settled. Ask your broker about a scope ruling before you price it either way.
  • Wired glass and patterned (Type II) glass A-570-188 Out Excluded in the scope text. AD order, 91 FR 17250

Which certificate answers which question

Each certificate answers one question. A factory that sends the right certificate for the wrong question has not answered yours.

  • NFRC rates energy and optical performance only. A page that says NFRC sets structural thresholds is wrong: structural, air and water performance is NAFS.
  • A NAFS test report from a lab is not certification. Certification adds a plant audit and a label, and it covers one plant.
  • A list of factory names with no CPD codes proves nothing. Ask for the CPD number on a production label and look it up.

How to check each certificate

All certificate details below checked against the issuers and directories linked.

NFRC 100/200 energy rating and label

Lookup steps Ask for: The full CPD number from a sample label (format like AAA-X-11-01234-01234) and the CPD product-line code for the exact glazing option quoted.

National Fenestration Rating Council (NFRC)

Proves
The product line's U-factor, SHGC and visible transmittance were rated by NFRC-accredited labs, and an NFRC-licensed inspection agency authorized the label.
Does not prove
Structural, air or water performance (that is NAFS), impact resistance, or that the factory quoting you is the authorized manufacturer of that line.
Required by
  • Building code: IECC and IRC energy chapters require U-factor and SHGC determined to NFRC 100/200 and labeled, or conservative default values.
  • State: California Title 24 Part 6 §110.6 requires NFRC-rated and labeled products, or CEC default values with a Fenestration Certificate.
  • Spec or market: ENERGY STAR requires NFRC certification.
Ask for
The full CPD number from a sample label (format like AAA-X-11-01234-01234) and the CPD product-line code for the exact glazing option quoted.
Look it up
NFRC Certified Products Directory (CPD) Search by: Manufacturer, Product type, Applied film, CPD number, Label Verification (full CPD number). 757 manufacturers on 2026-10-18, about 94 with a Chinese city or province in the name. That is a name check: a Chinese plant listed under an English brand name is not counted. Only currently certified products appear in the manufacturer and type searches.
  1. Ask for a photo of the NFRC temporary label from the production lot, not a brochure.
  2. On search.nfrc.org, pick the factory under Manufacturer. If it is missing, ask whose CPD line it is: NFRC lets a private labeler's name go on the label while the manufacturer holds the authorization.
  3. Open the product line and match U-factor, SHGC and VT for the exact glazing you are buying.
  4. Run Label Verification with the full CPD number. It also returns historical labels, so confirm the line is current in the manufacturer search.
Red flags
  • The company name on the label is not in the CPD and nobody can name the private-label relationship.
  • The CPD number does not resolve, or resolves to different U, SHGC or VT values.
  • No temporary label. NFRC treats an unlabeled product as not certified.
  • 'Tested to NFRC' values from a factory lab report with no inspection agency.
  • A claim that NFRC covers structural performance. It does not.

NAFS (AAMA/WDMA/CSA 101/I.S.2/A440) certification

Lookup steps Ask for: A photo of the certification label with the FGIA manufacturer code (like XYZ-1) or the WDMA Hallmark number (###-H-###).

Certification programs: FGIA/AAMA Gold Label, WDMA Hallmark, Keystone, NAMI, QAI

Proves
The product line passed structural, air and water tests to a stated Performance Class and PG/DP, and the certifier audits the plant.
Does not prove
Energy performance (that is NFRC), impact resistance unless the listing names TAS 201/202/203 or ASTM E1886/E1996, or that a larger size than the tested size meets the same PG.
Required by
  • Building code: IBC and IRC require exterior windows, doors and skylights to be tested and labeled to NAFS (IRC R609 / IBC 1709.5). Third-party certification is the usual way to meet the labeling requirement.
Ask for
A photo of the certification label with the FGIA manufacturer code (like XYZ-1) or the WDMA Hallmark number (###-H-###).
Look it up
FGIA Certified Products Directory Search by: CPD number, Manufacturer code / plant code, Manufacturer, Operator type, Performance class, PG, Framing material, Specification (A440 editions, TAS 201/202/203, AAMA 506). On 2026-10-18 we name-checked the 101 names in the FGIA Manufacturer search list and about 130 WDMA Hallmark names against Chinese province and city names and found none. FGIA plant codes are numbers with no location, so a Chinese plant under an English brand name would not show up. NAMI, Keystone and QAI also certify NAFS and were not checked. Also: WDMA Hallmark (AMS) Also: FGIA archived CPD (lapsed products)
  1. Ask for the certification label photo, not a test report.
  2. Ask which certifier issued the label (FGIA, WDMA Hallmark, Keystone, NAMI or QAI) and look the line up in that certifier's own directory.
  3. Search FGIA by CPD number or manufacturer/plant code, or WDMA Hallmark by Hallmark number. Check the archived CPD if the line is not current.
  4. Match Performance Class, PG and maximum tested size to your quote.
  5. Treat a Chinese factory's 'AAMA certified' claim as unproven until it shows a CPD entry for its own plant.
Red flags
  • 'Tested to AAMA' or 'meets NAFS' backed only by a lab report. A test report has no plant audit and is not certification.
  • The label's manufacturer code is not in the FGIA CPD, or the CPD shows a different plant.
  • The quoted PG/DP is higher than the directory rating for that size.
  • An expired Hallmark or Keystone report.
  • The test report was issued to a US importer while the units come from an unnamed Chinese plant. Certification is plant-specific.

Florida Product Approval (FL#)

Lookup steps Ask for: The FL# and the exact product name as listed.

Florida Building Commission / DBPR

Proves
The named manufacturer's product is approved under the Florida Building Code for the listed sizes, design pressures and, if marked, impact and HVHZ use.
Does not prove
That a different factory's product is approved. The approval belongs to the manufacturer listed.
Required by
  • State: Florida requires statewide (FL#) or local product approval for building-envelope and structural products. HVHZ (Miami-Dade, Broward) adds HVHZ testing.
Ask for
The FL# and the exact product name as listed.
Look it up
Florida Building Commission product approval search Search by: FL# (application ##### or product #####.#), Product manufacturer, Category and subcategory, Code version, Status, Compliance method, QA entity, HVHZ, Impact.
  1. Search the FL# and confirm the manufacturer is the factory you are buying from, or that the holder authorizes that factory in writing.
  2. Download the approval and installation drawings from floridabuilding.org, not from the seller.
  3. Check code version, HVHZ yes/no, impact yes/no, design pressures, size limits and the QA entity.
  4. Check the required permanent label on samples.
Red flags
  • The FL# belongs to a different manufacturer.
  • The approval is withdrawn, superseded, or on an old code version.
  • Approved for non-HVHZ only while the job is in Miami-Dade or Broward.
  • The size or design pressure is outside the approved range.
  • The QA entity on the label does not match the approval.

Miami-Dade Notice of Acceptance (NOA)

Lookup steps Ask for: The NOA number.

Miami-Dade County RER, Product Control Section

Proves
The applicant's product is accepted for use in the High-Velocity Hurricane Zone within the stated design pressures and impact rating, until the NOA expires.
Does not prove
Acceptance of another company's product, or anything after the expiry date printed on the NOA.
Required by
  • Building code: Required in Miami-Dade (HVHZ). Broward also falls under HVHZ rules.
Ask for
The NOA number.
Look it up
Miami-Dade product control search Search by: NOA number, Applicant, Category and subcategory, Material, Impact, Design pressure.
  1. Search the NOA number and confirm the applicant is your factory.
  2. Pull the NOA PDF from miamidade.gov and check the expiry date, impact rating and design pressures.
  3. Check the NOA-required permanent label on samples.
Red flags
  • The NOA number belongs to a different applicant.
  • The NOA has expired.
  • An NOA PDF that came only from the seller and differs from the county's copy.

ENERGY STAR Windows, Doors and Skylights v7.0

Lookup steps Ask for: The NFRC CPD product-line code and the ENERGY STAR partner name.

US EPA

Proves
A product line made by an ENERGY STAR partner meets v7.0 criteria (products made on or after 2023-10-23) for the stated climate zones, based on NFRC ratings.
Does not prove
Structural or water performance, or code compliance in your jurisdiction.
Required by
  • Spec or market: Voluntary federal label. Drives some utility rebates and retailer programs.
Ask for
The NFRC CPD product-line code and the ENERGY STAR partner name.
Look it up
ENERGY STAR Product Finder: certified windows Search by: Product category, Climate zone, Product type, ENERGY STAR partner, Frame material, Keyword. Each result shows a product-line code in NFRC CPD format, so it can be cross-checked against the NFRC CPD.
  1. Search Product Finder by partner name and product-line code.
  2. Cross-check the same product-line code in the NFRC CPD.
  3. Confirm the values meet the criteria for your climate zone.
Red flags
  • An ENERGY STAR logo from a brand that is not an ENERGY STAR partner.
  • The logo is used with no NFRC label.
  • Values that do not meet the climate-zone criteria.

California Title 24 Part 6 fenestration (§110.6)

Lookup steps Ask for: The NFRC CPD number, or the Fenestration Certificate if CEC default values are used.

California Energy Commission (CEC)

Proves
The window or door carries NFRC-certified ratings on a label, or uses CEC default values documented on a Fenestration Certificate.
Does not prove
Structural performance, or anything outside California.
Required by
  • State: California Title 24 Part 6 §110.6: NFRC-rated and labeled products, or CEC default values (Table 110.6-A/B) with a Fenestration Certificate.
Ask for
The NFRC CPD number, or the Fenestration Certificate if CEC default values are used.
Look it up
NFRC Certified Products Directory (for the NFRC route) Search by: Manufacturer, CPD number, Label Verification.
  1. If the product is NFRC-rated, verify the label in the NFRC CPD.
  2. If default values are used, check the Fenestration Certificate against the CEC default tables.
Red flags
  • A Title 24 claim with neither an NFRC label nor a Fenestration Certificate.

Texas Department of Insurance windstorm product evaluation

Lookup steps Ask for: The TDI report number (for example DR-####, RV-###) or the linked ESR number.

Texas Department of Insurance, Windstorm Inspection Program

Proves
The product has a current TDI evaluation (or a linked third-party report such as an ICC-ES ESR) accepted for TWIA windstorm insurance eligibility.
Does not prove
Code approval outside the TDI program, or anything after the report expires.
Required by
  • State: Insurance requirement: only for construction seeking TWIA windstorm eligibility in designated Texas catastrophe areas.
Ask for
The TDI report number (for example DR-####, RV-###) or the linked ESR number.
Look it up
TDI public product evaluations Search by: Product name, Category, Material, Manufacturer, Impact resistance, Report number. 3,871 entries on 2026-10-18. Expired reports are removed.
  1. Search the report number or manufacturer in the TDI table.
  2. Confirm the report is unexpired and the manufacturer matches your supplier.
  3. For third-party reports, open the linked ESR and check it too.
Red flags
  • The report number is not in the table.
  • The manufacturer on the report differs from the supplier.

Safety glazing: CPSC 16 CFR 1201 and SGCC certification

Lookup steps Ask for: The SGCC number etched on the glass and the plant name.

US CPSC (rule); Safety Glazing Certification Council (SGCC, voluntary certification)

Proves
Glass in doors and other hazardous locations meets the impact standard, and (with SGCC) the plant is in a certification program with periodic testing.
Does not prove
Thermal, structural or impact (hurricane) performance of the window or door.
Required by
  • Federal: 16 CFR 1201 applies to glazing in doors, storm doors, sliding doors and shower and tub enclosures; manufacturers self-certify and issue a General Certificate of Conformity.
  • Building code: IBC 2406 and IRC R308 require a permanent identification mark on each pane in hazardous locations.
Ask for
The SGCC number etched on the glass and the plant name.
Look it up
SGCC certified products directory Search by: Licensee, Plant, SGCC number, Country, Product type. Many Chinese plants are listed. A PDF edition (July 2026) is also published.
  1. Read the SGCC number from the etched mark on a sample pane.
  2. Search the SGCC directory and confirm the plant, not just the licensee.
  3. Match product type and thickness, and open the latest record of compliance testing.
Red flags
  • The etched SGCC number is not in the directory or belongs to a different plant.
  • A removable sticker where the code requires a permanent mark.
  • Glazing category or thickness that does not match the listing.

Check an NFRC CPD number and compare the label ratings. The guide separates current certification from historical labels.

QC checkpoints

Where a window order goes wrong, in the order you can catch it.

  1. 1 Before the deposit
    • Shop drawings signed for every opening, with the opening schedule attached.
    • NFRC, NAFS and FL or NOA identifiers looked up by you in each directory, not through links the seller sent.
    • A sample unit built to the drawing, labels attached.
  2. 2 During production
    • Profile wall thickness and thermal break measured against the drawing.
    • Coating type and thickness checked against the spec on the drawing, for example AAMA 2604 or 2605.
    • Glass makeup (low-E surface, gas fill, spacer) matches the glazing option on the CPD line.
  3. 3 Pre-shipment inspection
    • Sizes checked against the opening schedule, and hardware operated on a sample of units.
    • NFRC temporary label and NAFS label on every unit, plus the permanent marks FL or NOA approvals require.
    • Etched safety-glazing mark on each tempered pane.
    • Crating and corner protection checked, units counted against the packing list.
  4. 4 On site
    • Field water test on a sample of installed units when the spec calls for it (AAMA 502 or ASTM E1105).
    • Labels left on until the inspector signs off.

MOQ and lead time

MOQ and lead time: no sourced data yet.MOQ moves with profile series and colors (each is a die setup and a coating batch), custom dies, laminated, impact or tinted glass and hardware brands the factory does not stock; lead time with shop drawing rounds (production starts at sign-off), NFRC or NAFS testing for an uncertified line, a Florida approval or NOA the factory does not hold yet and tempering, laminating and IGU assembly.

Questions buyers ask

Is it a good idea to buy windows from China?
It can be, if the factory shows the US documents your job needs for its own plant: an NFRC label that resolves in the CPD, a NAFS certification label, and an FL# or NOA for impact work. Price it landed. HTS 7610.10.00 pays 63.2% before AD/CVD, and frames, parts or loose glass can add AD/CVD on top. If the quote still wins after that and after a pre-shipment inspection, it is a reasonable buy.
What is NFRc windows?
NFRC is the National Fenestration Rating Council. An NFRC-certified window is a product line whose U-factor, SHGC and visible transmittance were rated by NFRC-accredited labs, with the label authorized by an NFRC-licensed inspection agency. The ratings cover energy and optical performance only. Structural, air and water performance is NAFS. Check any NFRC claim by entering the full CPD number from the label in NFRC's Label Verification search.
Who are the best Chinese window manufacturers?
We don't rank them, and a ranking on a factory's own blog is not evidence. A defensible shortlist is factories that appear under their own name in the NFRC Certified Products Directory, hold a NAFS certification label for their plant, and, for coastal jobs, hold the FL# or NOA. On 2026-10-18 we name-checked the FGIA and WDMA Hallmark directories and found no Chinese-named manufacturers. That was a name check, not an address search, so a Chinese plant under an English brand would not show up, and NAMI, Keystone and QAI, which also certify NAFS, were not checked. Ask every Chinese factory which certifier issued its NAFS label, then look it up in that certifier's directory. NFRC's terms do not let us republish its directory, so search it yourself with the steps on this page.

Sources and changes

Every rate, case and directory on this page, with the date we last checked it.

Sources Checked
  1. 1.HTSUS 2026 Rev. 21, 7610.10.00
  2. 2.HTSUS Chapter 99, U.S. notes 16, 20, 31, 37, 41, 52 (Rev. 21)
  3. 3.USTR continuation of the China Section 301 actions, 91 FR 64212
  4. 4.Proclamation 11021, 91 FR 18201
  5. 5.Proclamation 11032, 91 FR 34085
  6. 6.AD review final 2024-25, 91 FR 53224
  7. 7.CVD review final 2024, 91 FR 51662
  8. 8.Continuation of orders, 87 FR 66128
  9. 9.ITC negative, 2023-24 case, 89 FR 92720
  10. 10.AD order, 91 FR 17250
  11. 11.CVD orders, 91 FR 17253
  12. 12.AD order, 76 FR 30650
  13. 13.90 FR 11943
  14. 14.84 FR 39805
  15. 15.NFRC Certified Products Directory
  16. 16.NFRC: temporary and permanent labels
  17. 17.CEC 2025 fenestration quick reference
  18. 18.FGIA certified products directory
  19. 19.WDMA Hallmark certification
  20. 20.Florida product approval search
  21. 21.Miami-Dade product control search
  22. 22.ENERGY STAR v7.0 key product criteria
  23. 23.ENERGY STAR windows, doors and skylights for partners (current specification)
  24. 24.TDI windstorm product evaluations
  25. 25.SGCC
  26. 26.SGCC certified products directory (PDF)
  27. 27.NFRC CPD: search by manufacturer
  28. 28.NFRC CPD: Label Verification (full CPD number)
  29. 29.NFRC CPD: search by CPD number
  30. 30.NFRC CPD code listing (product type codes)
  31. 31.NFRC Terms of Use (CPD data, non-member restrictions)
  32. 32.NFRC commercial certification

Not yet checked against the primary text: NFRC: the IECC and IRC energy-chapter section numbers; NAFS: IRC R609 and IBC 1709.5; FL Product Approval: the Florida statute and rule citations for product approval; Safety glazing: the full 16 CFR 1201 scope list, IBC 2406 and IRC R308. These come from secondary sources; confirm them with your code official or broker before you rely on them.

Changes that touch this page

  1. Aluminum extrusions AD review 2024-25 final: all 18 companies under review at the China-wide rate of 86.01%.

    AD review final, 91 FR 53224

  2. Aluminum extrusions CVD review 2024 final: six non-responsive companies at 164.29%; all-others stays 7.37%.

    CVD review final, 91 FR 51662

  3. Section 232 steel, aluminum and copper is rebuilt: 50% and 25% tiers charged on full customs value instead of metal content. Aluminum windows and doors (7610.10) and extrusions (7604) pay 50% on the whole entered value.

    Proclamation 11021, 91 FR 18201

  4. AD/CVD orders on float glass products from China, including IGUs, tempered and laminated glass: China-wide AD 181.52%, CVD all-others 19.75%.

    AD order, 91 FR 17250CVD orders, 91 FR 17253

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By Procurement research desk Updated Data checked How we check