Replacement Windows, Doors, & Siding Since 1973


Infinity from Marvin Replacement Windows and Doors


Gravina's Window Center of Littleton is a window replacement company headquartered in Littleton and serving the Denver Colorado Front Range. We always offer a free estimate on new windows and doors. As an A+ Better Business Bureau Rated Company, family owned and operated Infinity from Marvin window replacement dealer. We constantly strive for excellence with outstanding installation in Infinity fiberglass window and door replacements.

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.  Depending on the age and style of your home, Gravina's Window Center of Littleton offers full-frame window replacement methods. We will help you determine the best solution for your home, including addressing any concerns about water or structural damage. Our practices are designed for maximum efficiency and minimal disruption to your home. We streamline your entire window replacement project — from start to finish. 

 infinity from marvin windows



If you’re in Denver Colorado and need replacement windows, we can help. From replacing full-frame windows to insert window installation, Gravina’s Window Center of Littleton has you covered.  We offer the best fiberglass windows on the market, Infinity from Marvin - Made from Ultrex fiberglass.  With professional installation and a lifetime workmanship warranty, we do window replacement the right way.

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infinity from marvin windows and doors

infinity from marvin replacement windows

Trusted Family Owned gravinas windows

Infinity from Marvin Replacement Windows and Doors

Over the years, we have found that when homeowners insist on replacing vinyl windows, they are just putting a bandaid on their problem — an expensive one at that. Vinyl replacement windows expand and contract under Colorado weather conditions — making vinyl replacement windows challenging to open and close.  This warping and shifting affect their performance and durability.  Time and time again we see people needing their windows replaced again.  If they had only replaced them with a stronger window.  Infinity Windows created Ultrex fiberglass with one goal in mind: to develop the most durable window and door material in the industry.  It’s not only eight times stronger than vinyl — it resists expanding and contracting in Colorado weather. So you get a secure, snug fit that will endure. 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 meet Energy Star requirements. Backed by Marvin Windows, homeowners are getting windows that are "Built for Life!".  Infinity fiberglass windows are the most durable fiberglass replacement windows in the Denver market.  

If you're starting to think about replacing your windows or are in the planning stages of your project, we can help you explore your options, answer any questions, or create a quote. It is the perfect window for your home. Replace your windows with Infinity from Marvin and breathe easy.


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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.

Partners with Infinity from Marvin Windows and Doors

The value of any Infinity from Marvin® window or door goes far beyond the quality of its materials and construction. Infinity windows and doors are built to last, long into the future.  There’s a reason you won’t find Infinity from Marvin windows and doors in the big box stores. It’s only through independent window installers like us that can offer an unparalleled level of support and expertise. Choosing and installing replacement windows properly involves a lot 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 and Marvin replacement windows and doors!

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*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. $500 off Infinity Patio Doors. Offer expires 1/31/23. *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. Cannot be combined with other offers. To qualify for discount offer, initial contact for a FREE Window and Door Estimate must be made and documented on or before 1/31/23 with the appointment then occurring no more than 14 days after the initial contact. The Infinity window and door replacement experience. Financing available to qualified homeowners; not all customers may qualify; higher rates apply for customers with lower credit ratings: No interest payments for 0-24 months.  Interest accrues from date of purchase but waived if paid in full within 0 to 24 months. Any finance terms advertised are estimates only.



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