The Precision Weld Okna 400 series Deluxe picture window with two panes of glass is very good choice for homeowners in Buffalo. Value priced with maintenance free features and durability. Let the window professionals from Wonder Window help you make the right choice.

  • 13% Better than Energy Star® minimum
  • 3000% Better AI protection
  • A great choice to keep the cold out with excellent thermal efficiency
  • Welded sash & frame for overall durability
  •  Custom made for your home
  • Available in custom exterior colors as well as four standard colors
          Energy Star Comparison To
Glazing Option U-Value SHGC VT CR Minimum* Energy Star Minimum
Dual Glazed              
Deluxe 0.26 0.32 0.59 63 0.30 13% Better


      Industry Comparison To  
    Our Windows Minimum Industry Minimum  
AAMA Rating R 75 R 15      
Air Infiltration cfm/ft2 0.01 0.3  3000% Better
Water Penetration mph 66 33    100% Better  
Structural Integrity mph 210 94    123% Better