Our Foundations window is designed for excellent performance in energy efficiency. This replacement window offers an energy efficient coating called Florida E that helps reduce heating and cooling cost. The Foundations window option doesn’t include many bells and whistles but it does exactly what it was designed to do. This window is available in a double hung, picture and geometrics*.

*size restrictions may apply to geometric shapes.
Foundations comes in white and tan only.



  • Fusion-Welded Frame and Sash
  • Raised Exterior Design
  • Sloped Sill
  • Extruded Lift Rails
  • Air Lok
  • Lap-Lok Meeting Rail
  • Flush-Mount Tilt Sashes
  • More...

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From Our Customers

"FAS replaced 3 windows and a sliding glass door in my home. The new windows are like night & day from what I had before. They kept the windows in the style I wanted and the slider glides perfectly. I can't wait til phase two. I will most definitely be rehiring FAS and their install crews for the next go around!"
Review Submitted on January 22, 2016, 04/24/2017
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