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C650 Ultra Series​
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Fiberglass Doors & Windows

The path to perfect windows and doors has never been clearer. From tranquil mornings to family dinners, Milgard seamlessly connects you to what matters most. The C650 Ultra™ Series offers durable fiberglass windows and doors with low expansion rates, ideal for any climate. Available in sliding or swinging configurations, these French patio doors blend performance and aesthetics, adding strength and curb appeal to any home.

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Why Choose Milgard C650 Ultra Series?

Enhance your home’s aesthetics and functionality with the Milgard C650 Ultra™ Series. These fiberglass windows and doors are designed for modern living, offering a blend of strength, style, and performance that will elevate your home’s comfort and appeal.

  • Trusted Brand: With over 50 years of experience, Milgard is synonymous with lasting comfort, protection, and quality.

  • Energy Efficiency: Keep your home comfortable year-round with energy-efficient fiberglass frames. These windows and doors help maintain interior temperatures, reduce energy usage, and meet ENERGY STAR® standards.

  • Durability: Exceptionally strong and durable, the C650 Ultra™ Series fiberglass frames have low expansion and contraction rates, ensuring long-lasting performance and low maintenance in any climate.

  • Aesthetic Appeal: The traditional profile of the C650 blends the strength and performance of modern materials with the aesthetic appeal of a classic wood door, enhancing any architectural design or interior décor.

  • Safety and Security: Designed with high-quality hardware, these doors and windows offer enhanced security and peace of mind.

  • Versatile Styles: Available in sliding or swinging configurations, the C650 Ultra™ Series offers a variety of options to suit your home’s design and functional needs. For windows, options include Single-Hung, Casement, Awning, Horizontal Slider, Double Vent, Bay, Bow, and Picture styles. Patio doors are available in Sliding, French Swing, and French configurations, providing flexibility and aesthetic appeal for different architectural needs.

  • Lifetime Warranty: Enjoy a Lifetime Limited Warranty, covering you for up to 20 years, ensuring long-term satisfaction and peace of mind.

Bring your home to life


Fiberglass patio doors are crafted from a blend of glass fibers and resin, creating doors robust enough to support expansive glass panels.

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Energy Efficiency
Fiberglass windows and doors, such as the C650 model, endure minimal swelling, rotting, or warping in harsh weather conditions. This durability helps maintain stable interior temperatures, contributing to superior energy efficiency, particularly beneficial for homes in regions with fluctuating temperatures.

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Color Options
These fiberglass windows are offered in four exterior color options: black bean, bark, harmony, and frost, allowing them to harmonize with any architectural style. You can also opt for a color-matched or white interior to suit your preferences.

Fiberglass Windows and Doors

Fiberglass frames are made from glass fibers and resin, forming a durable and weather-resistant material. These fiberglass components withstand varying conditions, including extreme heat and cold, without swelling, rotting, or warping, unlike other materials. Milgard consistently tests its renowned fiberglass frames for color uniformity, gloss, film thickness, and chemical resistance, ensuring superior quality and performance.

Fiberglass windows and doors offer minimal upkeep and are highly resistant to swelling, rot, warping, and corrosion. Unlike wood, they don’t need repainting, though you can paint them if you decide to change colors later on.

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Milgard Windows and Doors

Elevate any space in your home with the perfect windows and doors from Milgard. From classic sliding windows to vinyl, fiberglass, or aluminum options, our beautiful products provide protection from the elements, secure transitions, and inviting views.

Milgard Doors and Windows – Add Beauty To Your Home

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Milgard doors are made to your exact specifications. With several operating styles, you can find the best door for your needs. Not only that, Milgard offers a variety of frame material types:

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Milgard windows are crafted to meet your specific needs and preferences, offering a wide array of styles and materials to enhance any home or office. Milgard is known for its commitment to quality and innovation.

Customize Your Milgard Vinyl Windows and Doors

Personalize your windows and doors with our extensive customization options. Choose from a variety of styles, finishes, glass options, and hardware to match your interior and exterior design vision. We understand that every home is unique, and our customization capabilities reflect this understanding.

Quality and Innovation at Milgard

Ready to transform your living spaces with Milgard Windows and Doors? Explore our website to learn more about our exceptional products and find a Milgard dealer near you. Experience the Milgard difference and unlock the true potential of your home. Discover endless possibilities with Milgard Windows and Doors today! Elevate your home with superior windows and doors designed for your comfort and style. Explore our collection now!


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Romney Taylor

I’ve had two fantastic experiences with Fusion. Tony and his team managed to get our bi-fold doors back in working order. Quick to respond, clear on quoting, and professional and communicative throughout. Highly highly recommended.

Steve / Lou Everett

Tony and his son were absolutely fantastic. Had a bifold where the mechanism had broken and we couldn’t open the doors. Really lovely to find honest, value for money experts who know their stuff. Have done a fabulous job with the repair and doors are like new. Highly recommend.

Ele Marmor

Amazing service. Tony and his son were professional, punctual, reliable and provided a very high quality of work. After using many other companies in the past I will only be using Fusion Window and Door Maintenance Ltd in the future. Outstanding service!

Areas We Serve

Fusion Windows and Doors is proud to be serving most cities in Los Angeles County and other nearby Southern California townships. These include, but are not limited to:

La Canada/Flintridge
San Fernando Valley
San Marino
Beverly Hills
Santa Clarita
Thousand Oaks
San Bernardino

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Looking to upgrade your windows and doors? Look no further! Get a free estimate from Fusion Windows and Doors today.

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Frequently asked questions

Are fiberglass windows and doors durable?

Fiberglass frames in the C650 Ultra™ Series are exceptionally durable, featuring low expansion and contraction rates that ensure long-lasting performance even in harsh climates. They are resistant to swelling, rotting, warping, and corrosion, providing a maintenance-free solution for homeowners.

Are Milgard fiberglass windows and doors energy efficient?

Yes, the C650 Ultra™ Series is designed for superior energy efficiency. The fiberglass frames help maintain stable interior temperatures, reducing energy usage and contributing to overall home comfort. These windows and doors meet ENERGY STAR® standards, ensuring efficiency and savings on heating and cooling costs.

What design options are available for the C650 Ultra™ Series?

The C650 Ultra™ Series offers a variety of window styles such as Single-Hung, Casement, Awning, Horizontal Slider, Double Vent, Bay, Bow, and Picture windows. Patio doors are available in Sliding, French Swing, and French configurations, providing flexibility to match different architectural needs and design preferences.

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Leading dealer for Milgard, Andersen, Fleetwood, Marvin, LaCantina, Velux & Windsor.

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