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Wonder Premium

Premium = Warm Edge Triple Heat Shield Argon Technology with foam filled frame

Compare to Okna Awning triple pane glass,  Low E Argon, 750 series

  • Exceptionally Low Air Infilitration Rating
  • Triple Pane - Double Strength - Heat Shield Glass
  • Heatseal® Spacer with Argon Fill
  • Beautiful Beveled Foam Insulated Frame and Sash
  • NFRC U-Factor: 0.19  Air Infiltration: 0.02  Solar Heat Gain: 0.26