The Okna 400 series double hung Deluxe replacement window with two panes of glass is very good choice for homeowners in Buffalo. 

  • 13% Better than Energy Star® minimum
  • 600% 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
  • Half fiberglass mesh screens are factory installed.

 

          Energy Star Comparison To
Glazing Option U-Value SHGC VT CR Minimum* Energy Star Minimum
Dual Glazed              
Deluxe 0.26 0.30 0.54 62 0.30 13% Better

 

      Industry Comparison To  
            Our Windows Minimum Industry Minimum  
               
AAMA Rating (38 x 63)   R50 R15      
Air Infiltration cfm/ft2   0.05 0.3  600% Better
Water Penetration mph   56 33   70% Better  
Structural Integrity mph   171 94   82% Better