A logo grid tells you nothing. This page says what each body verifies, what it means for the person specifying the window, and exactly what evidence we can produce — including where we have none.
Certificate numbers and test reports are available on request. Where a rating is listed in a public directory we publish the number, so you can check it without asking us.
Energy performance
The only figures on this site a stranger can check without asking us for anything.
NFRCNational Fenestration Rating Council
What it verifies
Whole-product energy performance — U-Factor, Solar Heat Gain Coefficient, Visible Transmittance and Condensation Resistance — measured by an accredited laboratory under a standard procedure, then listed publicly.
What it means for you
A whole-product NFRC rating cannot be argued with at plan check, and it is not the same as a centre-of-glass figure. Centre-of-glass quietly omits the frame, which is where an aluminum window either performs or does not.
What we can show you
CPD numbers are published beside the rating on each product page — DRN-M-8, DRN-M-11, DRN-M-15, DRN-M-19, DRN-M-21 and others. Search any of them at nfrc.org and you will read the same figures we do.
ENERGY STARUS EPA energy efficiency programme
What it verifies
That a specific model meets the EPA threshold for a specific climate zone. It is awarded model by model and zone by zone, never to a company or a product range as a whole.
What it means for you
Any supplier who tells you their whole range "is ENERGY STAR" is telling you something that cannot be true. Ask which models, in which zone, and ask for it in writing.
What we can show you
Qualified models are available. Tell us your climate zone and we will confirm in writing which ones qualify there. We do not print a blanket claim, because a blanket claim would be false.
Performance and safety
Structural, air, water and glazing standards. These are held by our manufacturing partner.
AAMA / FGIAFenestration and Glazing Industry Alliance, formerly AAMA
What it verifies
Finish durability and forced-entry resistance, among other things. Powder-coat finishes are specified to the AAMA finish standards, and forced-entry resistance is tested to AAMA 1304.
What it means for you
The AAMA finish grades are the reason a powder coat carries a twenty-year warranty rather than a hopeful sentence about quality.
What we can show you
Specified by the manufacturer against these standards. Test reports available on request.
WDMAWindow & Door Manufacturers Association
What it verifies
That a product’s stated performance ratings were tested by an independent third-party laboratory rather than self-declared.
What it means for you
The distinction between a tested number and a claimed number is the whole game when you are buying from a factory you have not visited.
What we can show you
Performance figures on this site are laboratory figures. Where they are NFRC-certified we publish the directory number so you need not take our word for it.
NAMINational Accreditation & Management Institute
What it verifies
Third-party certification and in-plant inspection for fenestration performance.
What it means for you
In-plant inspection means someone external checks that what leaves the line matches what was tested. Certification without ongoing inspection only describes one sample on one day.
What we can show you
The manufacturer lists NFRC and NAMI certification against its window products.
IGCCInsulating Glass Certification Council
What it verifies
Durability of the insulating glass seal, by accelerated weather cycling.
What it means for you
Seal failure is the commonest way an insulated unit dies — fogging between the panes, ten years in. It is also what the twenty-year glass warranty covers.
What we can show you
Standard insulating glass supplied to the North American market is IGCC certified.
SGCCSafety Glazing Certification Council
What it verifies
That safety glazing meets the impact and breakage-pattern requirements of the US safety standard.
What it means for you
Safety glazing is mandatory in specific locations — doors, sidelights, low sills, wet areas. An uncertified pane in one of those openings fails inspection.
What we can show you
Standard glazing supplied to the North American market is SGCC certified. Tempered safety glass is standard across the range.
Regional approval
This is the group most often overstated in our industry, so read the wording closely — it is precise on purpose.
Miami-Dade CountyMiami-Dade County Product Control
What it verifies
Impact resistance, water tightness and air infiltration under the toughest hurricane protocols in the United States.
What it means for you
A Notice of Acceptance is a specific numbered approval issued by the county. Being tested to the same standards is a real and substantial thing — but it is not the same thing, and only one of them has a number you can put in a submittal.
What we can show you
Our impact line is TESTED TO Miami-Dade County NOA standards. It does not hold a Miami-Dade NOA number, and we do not claim one. Testing follows the Florida Building Code 8th edition (2023) under TAS 201, TAS 202 and TAS 203, rated Zone 4 missile level D at 50 ft/sec — the HVHZ large-missile requirement. This satisfies testing requirements in parts of Florida. Approval is granted jurisdiction by jurisdiction; send us the project address and we will confirm in writing what applies there.
Florida DBPRFlorida Department of Business & Professional Regulation
What it verifies
Statewide Florida Product Approval, administered by the DBPR and separate from the Miami-Dade county system.
What it means for you
Florida has two parallel routes. A product can satisfy one and not the other, and which you need depends on where the building is.
What we can show you
Our impact line is tested to the Florida Building Code 2023 protocols. We do not currently hold statewide approval numbers, and we will confirm in writing what applies at your address rather than let you assume.
Codes and international standards
The documents your specifier already works in, and the markets these systems were built for.
CSIConstruction Specifications Institute
What it verifies
Nothing about the product — CSI is the organising system for specification documents, MasterFormat.
What it means for you
Documentation arriving in the section numbers your specifier already uses saves an afternoon per package. Small thing, noticed every time.
What we can show you
Product documentation is organised to CSI MasterFormat sections.
CSACanadian Standards Association
What it verifies
Fenestration performance under the joint North American standard, AAMA/WDMA/CSA 101/I.S.2/A440.
What it means for you
It is one document covering the US and Canada, so a rating under it travels across the border with the project.
What we can show you
Products are rated to the joint standard.
CEEuropean conformity marking
What it verifies
Conformity with EU requirements for placing the product on the European market.
What it means for you
The platforms originate in European systems. Useful context, but a CE mark is not a US rating and we never present European test data as one.
What we can show you
Where a figure on this site is converted from European test data, the page says so on the figure itself.
AS 2047Australian Standard for windows and doors
What it verifies
Wind and water performance for the Australian market.
What it means for you
Relevant mainly as evidence that these systems are built to several national standards rather than one, which is a reasonable proxy for how the factory works.
What we can show you
Products are also built to AS 2047 for the Australian market.
Quality system and independent inspection
Company-level credentials, not product ratings. They say how the factory is run and who is allowed to check it — which matters on a container you have not seen, but is a different claim from anything above.
ISO 9001:2015Quality management system
What it verifies
That the factory operates a documented, audited quality management system — how work is controlled, how defects are handled, how records are kept. Worth knowing: ISO itself certifies nobody. It writes the standard; an external certification body audits against it and issues the certificate, so "certified by ISO" is never a correct phrase, from anyone.
What it means for you
It says nothing whatsoever about a U-factor. It says the factory has a process and someone audits it, which is about consistency between units rather than the performance of any one of them.
What we can show you
Held by the manufacturing partner. We are requesting the issuing certification body and the certificate number so this page can name both — a standard on its own is not verifiable, whereas a certificate number in the issuer’s public directory is.
SGSIndependent inspection and testing
What it verifies
Whatever you commission it to verify — production conformity, quantity, packing, loading.
What it means for you
This is the practical answer to "how do I trust a container I have not seen". You can commission a pre-shipment inspection on your own order, paid by you, reporting to you.
What we can show you
Available on request for your order. Ask us and we will arrange access.
Bureau VeritasIndependent inspection and certification
What it verifies
The same function as SGS — an outside party verifying what actually leaves the factory.
What it means for you
Two options rather than one, which matters if your own QA programme already has a preferred inspector.
What we can show you
Available on request for your order.
FAQ
What does NFRC certified mean for a window?
It means the whole product — frame and glass together — was measured by an accredited laboratory under a standard procedure, and the result is listed publicly in the NFRC Certified Products Directory under a CPD number. It is not the same as a centre-of-glass figure, which omits the frame. Our product pages publish the CPD number next to the rating so you can look it up at nfrc.org yourself.
Are your windows approved for Florida projects?
Our impact line is tested to Miami-Dade County NOA standards, under the Florida Building Code 8th edition (2023), through TAS 201, TAS 202 and TAS 203, rated Zone 4 missile level D at 50 ft/sec. It does not hold a Miami-Dade NOA number. That satisfies testing requirements in parts of Florida, but approval is granted jurisdiction by jurisdiction — send us the project address and we will confirm in writing what applies there before you specify it.
Are these certifications held by NEXWD or by the factory?
By the factory. NEXWD is the brand and the US channel; our manufacturing partner holds the certifications and contracts with you directly. It matters because it tells you who answers a technical question and whose name is on a certificate.
Can I get the actual certificates?
Yes. Certificate numbers and test reports are available on request. Where a rating is in a public directory we publish the number so you do not have to ask at all.
Ask us for the documents
Tell us the project location and we will confirm in writing what is certified and what is only tested, before you specify it.
NFRCNational Fenestration Rating Council
