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The National Fenestration Rating Council, Inc. develops and administers comparative energy and related rating programs that serve the public and satisfy the needs of its private sector partners by providing fair, accurate, and credible, user-friendly information on fenestration product performance. Our members consist of representatives from fenestration product manufacturers, major trade organizations, state energy offices, research organizations, utilities, specifiers, builders, testing laboratories, energy consultants, and public interest groups.

Please note: if you are a manufacturer, becoming a member of the NFRC does NOT certify your products. For information on getting your products certified please click here for residential or here for commercial.

NFRC membership is based on a calendar year (January 1–December 31). 

Member Categories

Fenestration Industry:

Fenestration Manufacturers and Suppliers

Organizations with significant involvement in the manufacturing, sale, or distribution of fenestration products or components.

Fenestration Industry Organizations/Consultants

Organizations who have a significant involvement in representing the interests of or performing services for companies that manufacture, sell, or distribute fenestration products or components

Licensed Independent Inspection and Accreditation Agencies (IAs)

Organizations who are NFRC-licensed independent certification and inspection agencies

General Contractors/Installers

Organizations with significant involvement in building residential or commercial structures and/or installing fenestration products; or other organizations who have significant involvement in representing the interests of those organizations.

Laboratory Category:

NFRC Accredited Laboratories

Organizations who are NFRC accredited simulation and/or testing laboratories


General Interest Categories

Utilities or Energy Service Providers

Organizations who are public or private utility or energy service providers or organizations who have sifnificant involvement in representing the interest of those organizations.

Architects, Specifiers, or Design Professionals

Organizations who have significant involvement in the purchase or specification of manufactured fenestration products and/or systems or organizations who have a significant amount of activity representing the interests of those organizations.

Government Agencies/Building Officials

Local, state, or federal government agencies or building code agencies

Higher Education Institutions/Researchers

Institutions or organizations of research and higher education

Consumer, Environmental or Energy Efficiency Organization

Not-for-profit consumer, environmental, energy efficiency or other public interest organizations or organizations who have a significant amount of activity representing the interests of such organizations.

*once paid, membership dues are non-refundable

This Assignment of Copyright form provides for the assignment of the copyright in all written materials, comments and other written contributions voluntarily submitted by the undersigned to the National Fenestration Ratings Council Incorporated (“NFRC”). This signed Copyright Assignment form will be kept on file, and will apply to all submittals you send electronically or in hard copy form to NFRC.

I hereby assign to NFRC all copyrights I may own in any written materials I prepared or which were prepared for me that are at any time submitted to NFRC for its consideration, including materials that may be incorporated into any NFRC program or technical documents, in written, electronic, or other tangible format (the “Contributions”). I understand that I will have no future rights in any of these Contributions and that NFRC shall own the entire copyright in such Contributions. I certify that I have the legal right to assign the copyright in such Contributions to NFRC, and that to my knowledge such Contributions are not protected by any copyright or other proprietary rights owned by any other person or entity.

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