If you could buy any window you'll love the price on this triple pane winner. The 500 Series Deluxe is simply a great window you will be happy you chose this version for it performance, buty and energy savings. Homeowners and contractors appreciate this window so will you.
  • 33% Better than Energy Star® minimum
  • 333% Better Air Infiltration protection than Industry Standards.
  • Triple pane glass
  • 3¾" Depth Welded Mainframe with superior strength long lasting performance.
  • The Heatseal® warm edge spacer system provides excellent thermal efficiency 
  • Full integral interlock with double weather-stripping.
  • Optional Auto-Locking system
  • Heavy gage fully extruded handles 
  • Factory installed Fiberglass mesh half screens come standard on all windows
  • Great for Replacement and New Construction applications
  • Available in 2-lite and 3-lite choices
  • Available grids between glass in Common Grid Patterns
          Energy Star Comparison To
Glazing Option U-Value SHGC VT CR Minimum* Energy Star Minimum
Triple Glazed              
Deluxe 0.20 0.26 0.42 71 0.30 33% Better


      Industry Comparison To  
  OKNA Windows Minimum Industry Minimum  
AAMA Rating  R40 R15      
Air Infiltration cfm/ft2 0.09  0.3 333% Better
Water Penetration mph    59  33   79% Better  
Structural Integrity mph  153  94   63% Better