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Wonder Saver

Saver = Warm Edge Dual Heat Shield Argon Technology

Our Wonder Saver exceeds ENERGY STAR® standards and is an excellent value for replacing the windows in your home.

Precision Weld Double Hung Windows

Compared to OKNA 400 Precision Weld

  • Air Tight Fusion Welded Frame
  • Dual Pane Heat Shield with Argon
  • Full Interlock with Triple Weather-Stripping
  • Precision Design for Style and Function
  • NFRC U-Factor: 0.28  Air Infiltration: 0.05  Solar Heat Gain: 0.30