Fiberglass Replacement Windows and Doors by Infinity from Marvin
Infinity From Marvin
Your experts in window and door replacement
We make it easy to understand the process of replacing your windows and patio doors. So you can start enjoying superior comfort, broader views, and greater peace of mind. For a lifetime.
The promise of Infinity
Strength, beauty, and comfort — times a lifetime
Strength, maximized
Built with our proprietary Ultrex® fiberglass, Infinity windows bring unmatched strength and confidence to your replacement process.
Extraordinary views, from the outside in
Slim profiles paired with smooth, long-lasting finishes and optional EverWood® interiors ensure your window frames are as beautiful as the sweeping views they deliver.
Designed for your life
Thoughtful details like easy inside-out cleaning options and innovative weatherstripping keep maintenance effortless and ensure your home stays comfortable.
Lasting investment
Engineered to reduce energy costs and backed by 110+ years of Marvin quality and a Limited Lifetime Warranty, Infinity windows are an investment you won't regret.
Power of Numbers
From ordinary to extraordinary
8x
Ultrex is 8x stronger than vinyl
Millions of fiberglass strands lend strength to your windows for slimmer profiles and broader views.
3x
Acrylic finish is 3x thicker compared to the competition
Our proprietary finish provides a cleaner, smoother look that resists fading — even with the darkest colors.
Get Inspired
Explore the beauty of Infinity
Swinging French Door Exterior color: Stone White
Bi-Fold Door Exterior color: Pebble Gray
Single Hung Round Top Window Exterior color: Bahama Brown
Casement Window Exterior color: Bronze
Gorgeous windows! 100% satisfied! Made our hot and very sunny kitchen just sunny and bright. We don’t feel the heat from the sun anymore! So very efficient as well as beautiful."
Floyd & Melinda E.
Wisconsin Homeowners
Replacement window project
Transforming an Ohio home into a treehouse retreat
Your questions answered
Plan your replacement with confidence
Window Installation Process
We’ll share helpful information on the replacement window installation process, including tips for a successful and stress-free upgrade.
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How Much Should Replacement Windows Cost?
There are many different variables that can affect the overall cost of your window or door replacement project.
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Can I Install Replacement Windows Myself?
Why one DIY expert decided not to DIY replacement windows for her home.
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A Window Replacement Makeover
Transforming an Ohio home into a treehouse retreat with Infinity from Marvin fiberglass replacement windows.
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The Perfect Solution for a Historic, Lakeshore Renovation
The property dates back to 1891 but after a fire in 1987, the owners rebuilt the restaurant to preserve its mid-century charm with white siding and wood casement windows.
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Ohio Home Transformation
An Ohio family recently replaced the builder-grade, vinyl windows in their 12-year-old home with new, Infinity from Marvin fiberglass windows.
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