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Thermal Performance

Insulated Extrusion

Double Hung

  • Lift Rails are part of the sash extrusion. They will not snap off.
  • Tilt Latches have an updated look. Smoother operation, and better performance.
  • Higher sill dam (1/4”) Groove in bottom of sash for vinyl “fin” (just inside inner sill dam) to lock into. Creating a secure fit.
  • True Sloped Sill water moves away from home, no external weep holes to clog.


Our maintenance-free vinyl retains its color and smooth surface. Vinyl is not a thermal conductor. Multi-chamber extrusions are strong and provide additional insulation. Fusion Welded Vinyl Corners create strong, seamless frame and sash units.