This Okna double pane with clear glass is the perfect option for a homeowners seeking maintenance free performance and quality but on a tight budget..

  • 3000% better than Industry Standards for AI (air penetration)
  • Fusion welded sash and a beveled frame means greater for strength and durability.
  • Heatseal┬« spacer - warm edge system improves efficiency
  • Many design option for just the right look
  • Schedule a free quote today
          Energy Star Comparison To
Glazing Option U-Value SHGC VT CR Minimum* Energy Star Minimum
Dual Glazed              
Clear Glass 0.45 0.65 0.68 45 0.30  Does not qualify


      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