The Keystone Quality Assurance
Program is accredited by the
ANSI National Accreditation Board (ANAB), is officially recognized by the
Florida Department of Business and Professional Regulation (DBPR) for
demonstrating compliance with the third-party quality assurance
requirements of the Florida State Product Approval Rule 9N-3 (formerly
9B-72).
The Keystone Structural and Impact Performance
Certification Program
is accredited by the American National Standards Institute (ANSI), and
offers fenestration product manufacturers a third party verified,
nationally-recognized method for demonstrating product design pressure and
resistance to flying debris resulting from hurricanes.
Keystone is a National Fenestration Rating Council
(NFRC) licensed Inspection Agency (IA). The NFRC Certification
Program offers
fenestration (window and door) manufacturers a third party verified,
nationally-recognized method for demonstrating product U Factor, Solar Heat
Gain Coefficient (SHGC) and other energy performance characteristics as
required by the 2010 Florida Building Code.