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Fiberglass Windows


Fiberglass Windows – Colorado Tough and Energy Efficient

Colorado Window and Siding offers the full line of Milgard fiberglass windows. With a wide range of products, sizes, options and price points, Milgard is a leading manufacturer of sun resistant, energy efficient fiberglass windows. Several products in our Milgard line are Energy Star qualifying, allowing you to take advantage of the Federal Energy Tax Credit

To learn more about Milgard products, click here.


   • Benefits of Fiberglass Replacement Windows

      - Tilt in for easy washing

      - Calibrated balance system:  effortless operation

      - Custom sizes available

      - Maintenance free exterior with many color choices

      - Fiberglass, Fir, and Mahogany interiors available

      - Eight exterior standard finishes available


   • Styles Available

      - Casement & Awning Windowsproducts

      - Doulbe-Hung Tilt & Slider Windows

      - Picture Windows

      - Bay and/or Bow Windows 

      - Hinged Patio Doors; French Doors

      - Sliding Patio Doors