This is the most energy efficient slider in the series. The Enviro-Star 800 Series triple pane with krypton gas has everything a sliding window can offer. If you demand it all this is the one window to purchase. Designated 2105 Most Energy Efficient by Energy Star®  says everything you need to know about this high-end solution. Let the experts at Wonder Windows show you the difference between our windows and any other manufacturer.

  • 47% Better U-Value than Energy Star® minimum
  • 600% Better Air Infiltration protection
  • Wide selection of hardware options
  • Superior craftsmanship
  • Full integral interlock with double weather-stripping.
  • Full 3¼" Depth Welded Mainframe
  • Beveled colonial exterior features
  • Available in standard and custom exterior colors
  • Maintenance free, for years of long lasting performance.
  • Heatseal® warm edge spacer system for excellent thermal efficiency and drastic reduction in the possibility of condensation on the inside of the window.
  • Available in Replacement and New Construction applications.
          Energy Star Comparison To
Glazing Option U-Value SHGC VT CR Minimum* Energy Star Minimum
Triple Glazed              
Deluxe/krypton Gas 0.16 0.25 0.41 75 0.30  47% Better


      Industry Comparison To  
  Our Windows Minimum Industry Minimum  
AAMA Rating R 50 R 15      
Air Infiltration cfm/ft2 0.05 0.3  600% Better
Water Penetration mph   62 33  88% Better  
Structural Integrity mph 171 94  82% Better