Elite Patio Doors

All Affordable Windows Patio Doors are stringently tested by independent laboratories for:

  • Thermal Performance
  • Structural Integrity
  • Air Infiltration
  • Water Resistance
  • Wind Loads

Thermal performance tests are in accordance with NFRC Standards and requirements. Structural, air and water performance tests are to AAMA standards.

Test results are certified and administered through Keystone Certifications. An ANSI accredited, licensed, independent certification agency. All Affordable windows with the Ameriglass™ IG system meet or exceed Energy Star® requirements in all climate zones.

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