Costco
Built For Life
Replacing your windows and doors is a once-in-a-lifetime investment and it should feel like it. That’s why Infinity by Marvin uses the unmatched strength of Ultrex® fiberglass to craft stunning, custom-fit windows and patio doors designed specifically for your home.
Installed by locally trained Infinity by Marvin window replacement professionals and protected by an outstanding productwarranty¹, your dream home starts here. Let’s make it a reality today.
Receive a 25% Sales Discount on Qualifying Infinity By Marvin Purchases
Strength, Durability, and Beauty – The Infinity Difference
Getting Started Is Easy
Our local window and door specialists are here to help—ready to answer your questions, provide honest advice, and guide you to the perfect fit for your home and lifestyle.
Transform Your Home with Beautiful New Windows and Patio Doors
Replacing your windows and patio doors is an investment in your home’s comfort, safety, and style. That’s why every product we make is custom-built for your space—and built to last. Built for Life.
Windows in Every Size and Shape
Strength, durability, and expansive views are just the beginning. Infinity offers a wide range of design and finish options to complement—or completely refresh—your home’s unique character and architecture.
Patio Doors That Swing, Slide,
and Fold
Discover where form meets function with anew Infinity patio door. Elevate your home's style with a wide selection of design options—across color, glass, and hardware—to create your ideal look.
See the Possibilities
From rich dark tones to light, modern finishes—and the warm look of wood without the maintenance—Infinity offers something special for every home, in every climate.
Explore Our Selection of Windows and Doors
Shapes, finishes, and features designed to fit your home—each crafted with the incredible strength and beauty of Ultrex® fiberglass.
Awning
Bay
Bow
Casement
Double Hung
Round Top
Single Hung
Single Hung Round Top
Slider
Specialty Shape
Patio Doors
Sliding French Door
Swinging French Doors
Multi Slide Doors
Bi-Fold Door
Bi-Fold Door
Bi-Fold Door
Why Fiberglass?
Infinity’s proprietary Ultrex fiberglass is an unmatched combination of strength, beauty, durability, and stability in all climates.
1
Untrex vs Vinyl
Vinyl windows can warp and shift over time, making them hard to open and close and compromising their performance. Ultrex® resists sticking, swelling, and warping—so your windows and doors continue to operate smoothly for years.
2
Ultrex vs Wood
Wood windows provide a timeless, classic look but often require extra maintenance depending on the environment. Infinity’s EverWood® captures the beauty and detailed profiles of wood—without the upkeep.
3
Ultrex vs Other Composites
The Ultrex® fiberglass frame is exceptionally stable, expanding at nearly the same rate as the glass. In contrast, vinyl and wood/vinyl composites expand more than twice as much, which can impact energy efficiency and overall performance.