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 Programis accredited by the ANSI National Accreditation Board (ANAB), 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.
