Marvin Infinity Replacement Fiberglass Windows

Gravina's Window Center of Littleton® is Colorado's oldest Authorized Infinity window replacement company.  Headquartered in Littleton, CO, we serve the entire Denver Metro area and most of the Front Range. We offer free consultations on replacement windows, patio doors, entry doors, and James Hardie Siding. As an A+ Better Business Bureau Rated Company,  family-owned and operated company, we constantly strive for excellence with outstanding installation of Infinity fiberglass window and door replacements.

Infinity Fiberglass Windows Near Me

Are you looking to transform the appearance of your Colorado home? Look no further than Infinity from Marvin fiberglass windows. With Infinity's high-quality Ultrex fiberglass window frames and our world-class installation process, you can trust that your home's appearance will be impeccably transformed. Trust the experts at Gravina's Window Center of Littleton® to deliver exceptional results and help bring renewed joy to your home.


Is it time to replace your windows?

Inefficient and drafty windows and doors affect your home in many different ways. With energy costs getting higher, it may be necessary now, more than ever, to invest in replacement windows.  Getting your window and door replacement projects done professionally is easier than ever, thanks to the experts at Gravina's Window Center of Littleton®. We offer full-frame Infinity fiberglass windows that are suitable for any style of home, regardless of when it was built! Our five-star process ensures the best quality finish while causing minimal disruption to your space. Trust us with all your window replacement Denver needs and enjoy a seamless experience from beginning to end!

infinity from marvin windows and doors

infinity from marvin replacement windows

Trusted Family Owned gravinas windows

Infinity's Ultrex fiberglass windows are known for their exceptional strength and durability.

If you are a homeowner in Colorado looking for quality window replacement options, it's important to consider the durability and long-term performance of the windows you choose. Vinyl windows, while popular, can often fail to stand up under the fluctuating weather conditions we experience here. This can lead to costly replacements down the line. That's why we recommend Marvin Infinity Windows. Crafted with Marvin's proprietary Ultrex fiberglass, these windows provide superior strength and long-term performance, ensuring that your investment in new windows is a smart and lasting one.  Infinity Windows created Ultrex fiberglass with one goal in mind: to develop the most durable window and door material in the industry.  It's 8x stronger than vinyl, so it stands firm even in extreme temperatures or drastic weather changes - giving you a tight fit that won't budge! With its durability and performance, you can be confident knowing your window will remain secure for years. When customers choose Infinity from Marvin replacement windows, they know they will never have to worry about how they perform.  Infinity from Marvin Windows with Low-E Glass and Argon meets Energy Star requirements. Backed by Marvin Windows, homeowners are getting windows that are "Built for Life!".  Experience Colorado’s most reliable window replacement with Infinity fiberglass windows.


The advantages of Infinity windows and doors

Infinity replacement windows offer more than just exceptional views and outstanding durability. Crafted from Ultrex fiberglass, these narrow frames give you the best of both worlds with an expansive glass area that lets in natural light while providing years of reliable performance – something only a company like Marvin, with nearly two decades worth of knowledge, can bring to your project. Experience quality construction backed by superior materials: why choose anything else? Experience Infinity's advantage for superior windows and doors that boast expert craftsmanship, authoritative reliability, and a trustworthiness to last.





Why Choose Infinity Fiberglass Windows for your Home?

From patio doors to window replacement, choosing the best fiberglass windows is a no brainer.  Our Infinity fiberglass replacement windows and Infinity patio doors are designed to fit your project plans perfectly. You can count on each fiberglass window replacement to be durable, energy-efficient, and secure.  Available in a variety of sizes and shapes. As Infinity's oldest replacement window company in the country, Gravina’s Window Center of Littleton® offers the full line of Infinity from Marvin replacement windows. Made of Ultrex® fiberglass, Marvin’s patented pultruded fiberglass, Infinity windows combine the best strength, comfort, and energy savings on your utility bills for Denver homeowners.

What are Infinity Windows?

The Infinity Window is Marvin's fiberglass line of windows that offers various flexible and customizable replacement window and door options. Infinity windows are intended to replicate the look of standard wood windows and doors while affording contemporary features and low-maintenance performance. Get the best for your home with Infinity from Marvin Windows. Crafted to ensure peak performance, these premium fiberglass windows and doors bring reliability you can trust - all backed by Gravina's Window Center of Littleton®.

Finish and Colors

Enhance the look of your home with Infinity's premium acrylic window finishes and color choices. Our exclusive finishes are three times thicker than regular windows, which means you can enjoy the elegance of traditional wood finishes without any maintenance troubles such as sanding, scraping, or painting. Experience superior protection, style, and performance, all combined in a single, unique design that will exceed your expectations.

Exterior Options

Marvin's Infinity Window is the perfect choice for enhancing the exterior of your home in the long run. It delivers superior performance and durability, which helps maintain its beauty year after year. Our exclusive acrylic finish resists dents, scratches, scrapes, and fading, guaranteeing long-lasting shine that preserves its curb appeal.

Interior Options

Infinity's fortified acrylic finish provides unparalleled durability against wear and tear. Not only does it protect against external elements, but it also defends against daily wear inside your home. If you're looking for a more traditional look, you can opt for the stainable EverWood® finish which offers the richness and warmth of real wood. With Infinity, you can rest assured that your home is safeguarded while still maintaining its elegant aesthetic.

Infinity from Marvin Partnership

The value of any Infinity from Marvin® window or door goes far beyond the quality of its materials and construction.  You won’t find Infinity from Marvin windows and doors in the big box stores.  Only through independent window installers like Gravina's Window Center of Littleton® can offer unparalleled support and expertise. Choosing and installing replacement windows properly involves much more than people can imagine. We work only with homeowners to find the best solution to beautify your home and improve the curb appeal.


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Don't forget to ask about our current offers and special financing options for Infinity from Marvin replacement windows and doors!

marvin infinity windows


*With approved credit, special offers are not valid for previous customer orders and cannot be combined with any other discounts or previous special offers. Subject to credit approval. Not valid with other offers or estimates. Minimum purchase of (4) Infinity Windows.  The offer expires on 7/31/24. *Discount applied by retailer representative at the time of contract execution and applies to purchase of  Infinity windows and  Infinity patio doors.   Only Marvin, James Hardie, and Provia product lines are eligible for the offer. It cannot be combined with other offers. To qualify for a discount offer, initial contact for a FREE Window and Door Estimate must be made and documented on or before 7/31/24, with the appointment no more than 14 days after the initial contact. The Infinity window and door replacement experience. Financing is available to qualified homeowners; not all customers may qualify; higher rates apply for customers with lower credit ratings: No interest payments for 0-12 months.  Interest accrues from the date of purchase but is waived if paid in full within 0 to 24 months. Any finance terms advertised are estimates only.



infinity replacement windows

Looking to upgrade your home's windows and doors? Say hello to Infinity from Marvin - the hassle-free way to replace them!

infinity windows denver

As Colorado’s oldest authorized Infinity from Marvin replacement window provider, Gravina’s Window Center of Littleton® offers unmatched experience and steadfast dedication to quality. Our family-owned and operated business has garnered an A+ rating from the Better Business Bureau, a testament to our pursuit of excellence in every job we undertake. Serving the entire Denver Metro area and most of the Front Range, we specialize in window replacement that Denver homeowners can trust. Our expert window installer Denver team is committed to delivering superior service and craftsmanship. We provide comprehensive window replacement solutions, ensuring your home is fitted with the highest quality replacement windows. With our extensive knowledge and experience, we help homeowners replace windows to improve the comfort and look of their homes with Infinity Ultrex fiberglass windows and doors. Experience the unparalleled legacy of top-notch service and innovation at Gravina’s Window Center of Littleton®.