The National Fenestration Rating Council (NFRC) is the leading expert in the
certification and testing for windows, doors, and skylights and is recognized by the
Environmental Protection Agency (EPA) as a Certification Body (CB) for the
ENERGY STAR® program. To ensure that ENERGY STAR products continue to
perform in the marketplace as originally designed and certified, EPA requires that all
products bearing the ENERGY STAR logo be made available for independent
verification testing. As a CB, NFRC is implementing an Independent Verification
Program (IVP), scheduled for Spring 2013, to verify the performance ratings of
ENERGY STAR qualified products.
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