Fortis Series


Vytex's Fortis Series offers top rated vinyl replacement windows

The Vytex Fortis Series is one of the world’s most efficient window systems; and includes the most advanced features and technologies available. Fortis Series windows are manufactured from the highest-grade materials and tested to meet or exceed industry standards. They’re virtually maintenance-free, and will keep their like-new beauty and performance year after year.

Window Anatomy




Energy-Saving Glass Options

Our Fortis Series replacement windows offer you a variety of optional features to increase the energy efficiency of your windows, including:

VyGuard™ Laminated Glass

laminate-glassVyGuard Laminated Glass is available with Potomac-hp Series, Fortis Series, Casement Windows, and Signature Sliding Patio Doors… learn more

Envirosealed™ Technology

enviroVytex’s Envirosealed™ energy-efficient windows can lower energy bills and ensure a greener future for the planet… learn more

Vytex DuraTex™ Warm Edge Spacers

duratexAll insulated glass (IG) is not created equal! Our versatile warm edge technology spacer system helps you save on your energy bills… learn more

VyCore™ Foam Insulation

vycore-foamVytex’s exclusive insulation system increases the R-value resistance to heat flow. Add VyCore™ to just the frames of your Vytex replacement windows… learn more


tsloeIntroducing TripleSilverLoE™, the ultimate performance glass. It just might make all other low-e glass obsolete… learn more

Energy Saver R-5™ Glass

10970-01.VytexR-5 Sell Sheet2_final.inddIntroducing Energy Saver R-5 Glass from Vytex—the next generation in insulated glass units. learn more

download_arrowClick here for more information about our Energy Saver R-5™ Glass.

Only the Fortis Series offers you your choice of three complete high-performance, energy-saving glass packages:

Color Options


Introducing the VyWood™ Window—Vytex Fortis Series windows are the ultimate in premium windows, combining style, performance and efficiency to enhance your home’s character and maximize your energy savings. Fortis Series windows are now available in VyWood™ paintable, stainable interior laminate.

With VyCoat™ you can choose windows offering an array of colors, creating magnificent views. You can give your home roadside appeal, outstanding weatherability, years of color reliability, added value, and lasting distinction.

Window and Door Profile Coating System:

  • Waterborne-environmentally friendly.
  • Excellent exterior coating with superior performance.
  • Over 25 shades of the color spectrum.
  • Provides more color possibilities than co-extrusion.
  • High abrasion and humidity resistance.
  • Maintains color vibrancy.
  • Expanded color and gloss retention.
  • Proven durability in all weather conditions.
  • No peeling, flaking or cracking.
  • Specifically formulated to coat PVC.
  • Long-lasting beauty for the windows in your home.

VyCoat™ is specifically formulated to coat PVC and designed to meet all International Standard requirements.

VyCoat™ is available on window exteriors only and is exclusive to our Potomac-hp Series and Fortis Series.

Due to your computer monitor’s settings, actual colors may vary.

download_arrow For more information about our new Fortis Series windows, download the brochure.