The Envirosealed Jamb Extensions


Jamb extensions are available in the following species:

  • Pine
  • Maple
  • Poplar
  • Primed Poplar
  • Oak
  • White PVC (composite board)
  • Tan PVC (composite board)

Both standard size jamb extensions and custom size jamb extensions are available.

  • Green Facts

    Providing your family with efficient, maintenance-free windows.

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  • Industry's best warranty.

    View and download our warranty information today to learn more.

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  • Midway Windows & Doors

    Manufacturers of Alliance Window Systems Products.

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  • A variety of color options!

    A wide range of interior, exterior and woodgrain options. Learn more.

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