Keystone's third party
inspection and certification programs enable window, door, and skylight
manufacturers to demonstrate compliance with the requirements of building
codes, the ENERGY STAR® Windows Program and other utility/tax
rebate incentive programs.
Keystone is a National Fenestration Rating Council (NFRC) licensed
Inspection Agency (IA) that offers window and door certification
services. 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.
The Keystone Fenestration Certification Program is accredited by the
American National Standards Institute (ANSI) and the Standards
Council of Canada (SCC), providing fenestration manufacturers with a
full slate of nationally-recognized product certifications for both the US
and Canadian markets.
Keystone's Insulating Glass Certification Program is ANSI and SCC
accredited and NFRC recognized to provide insulating glass (IG)
manufacturers with certifications to both the US and Canadian IG seal
durability standards.
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 and ICC
Evaluation Reports.