Milgard Ultra Series Fiberglass Windows and Doors

Beautiful and contemporary, these fiberglass windows are strong and built to last. Create the home of your dreams. The stunning look of a high performance window.

Milgard Ultra Series Fiberglass Windows

Your style, envisioned.

If you can dream it, we can build it. Ultra Series is the ultimate, upscale window that makes a visual impact. The fiberglass material resists swelling, rotting, and warping making it the perfect choice for long-lasting durability coupled with exceptional beauty.

Milgard Ultra Series Fiberglass Windows

Durability and Energy Efficiency

Ultra Series custom fiberglass windows are heat and cold resistant, durable and low-maintenance. The frame expands and contracts at approximately the same rate as the insulated glass it holds, putting less stress on the seals allowing a clear, fog-free view. Choose an energy package for your area and learn about ENERGY STAR®.

Milgard Ultra Series Fiberglass Windows types

Define your home with Windows

Carefully chosen windows can make any home spectacular and make a statement about your style. Since every Milgard window is custom built to your order, you have the freedom to think outside the box. Mix and match window styles and configurations to achieve just the result you’re looking for.

Exterior Frame Colors

Looking for a dark interior frame to match the exterior? You’ll find it with Ultra Series. Choose Bark or Black Bean to create the popular dark window look. We have a total of seven, beautiful exterior frame colors available. Just select an operating style below to explore all the color options.


Milgard Ultra Series window hardware is attractive, durable, secure, and easy to operate. Available in white, clay, dark bronze or brushed chrome. Choose from the Positive Action Lock or optional Cam Lock for single hung or horizontal slider windows. Folding nesting operator handles are standard for casements and awnings.