In addition to certification and quality assurance listings available on Keystone's website, further details can be found on various partner and governmental websites:

• The National Fenestration Rating Council (NFRC)
• ENERGY STAR® Certified Products:
  • United States: ENERGY STAR®
  • Canada: Natural Resources Canada
• International Code Council (ICC)
• Florida Department of Business and Professional Regulation
• Miami-Dade / Broward County NOAs
• Texas Department of Insurance