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Wonder Premium

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

The most significant feature of Wonder Premium windows, is the high performing triple-pane Heat Shield with Argon glass package.  Dense foam frame insulation provides superior energy-efficiency, while protecting your family and guests from drafts, cold spots and glare.

Precision Weld Double Hung Windows
  • Exceptionally Low Air Infilitration Rating
  • Triple Pane - Double Strength - Heat Shield Glass
  • Heatseal® Spacer with Argon Fill
  • Beautfil Beveled Foam Insulated Frame and Sash
  • Full Interlock with Triple Weather-Stripping
  • NFRC U-Factor: 0.19  Air Infiltration: 0.02   Solar Heat Gain: 0.26