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The Ultra™ Series is the ultimate window frame material for new construction and fiberglass replacement windows. Because it's made of glass fibers, it expands and contracts at the same rate as the insulated glass it holds, thereby putting less stress on the seals, reducing the chance for seal failure and creates a clear, fog-free window that lasts for years and years.
Milgard® Ultra™ Series fiberglass windows combine a traditional wood-frame profile with the strength, stability and low maintenance of fiberglass.
All of our fiberglass windows withstand the harshest weather yet look like traditional painted wood windows. Milgard offers the option of custom colors applied at the factory, all custom made to your home's exact specifications at no extra charge, and no extended lead time. Custom hardware finishes are available from our wide selection of hardware finishes and grid options. And, all Milgard fiberglass windows are covered by our Full Lifetime Warranty with Glass Breakage.
Select an Operating Ultra™ Series Window Now:
- Single hung Ultra™ Series Fiberglass Window
- Double hung Ultra™ Series Fiberglass Window
- Horizontal Slider Ultra™ Series Fiberglass Window
- Picture Ultra™ Series Fiberglass Window
- Radius Ultra™ Series Fiberglass Window
- Casement Ultra™ Series Fiberglass Window
- Awning Ultra™ Series Fiberglass Window
- Bay Ultra™ Series Fiberglass Window
- Bow Ultra™ Series Fiberglass Window