Infinity from Marvin

Ultrex fiberglass replicates the look of traditional wood while providing low-maintenance performance

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Infinity from Marvin Replacement Windows

About this Collection

Infinity Ultrex fiberglass windows and doors replicate the look of traditional wood while providing modern features and low-maintenance performance. Marvin’s patrended extruded fiberglass interior and exterior, expands 87% less than vinyl – resists expanding and contracting in any climate. Limited Lifetime Warranty for as long as you own your home.

Discover Infinity from Marvin with the experts at Windows & Doors By Brownell.

Design Flexibility

MEDIUM – Thoughtfully selected features and options

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Ultrex fiberglass interior and Ultrex fiberglass exterior


Low Maintenance | Details of a traditional window | Limited Lifetime Warranty


New build | Replacement | Residential | Commercial


Vinyl vs. Fiberglass Windows & Doors

The facts speak for themselves. Our proprietary fiberglass is eight-times stronger than vinyl and three times stronger than vinyl/wood composites. It resists fading, chalking, peeling and cracking.


EverWood Stainable Fiberglass

Match your existing woodwork or take your home in a new design direction with EverWood, our breakthrough engineered wood grain interior finish. EverWood offers natural looks and texture – it looks, feels, paints and stains like wood – but is completely low-maintenance.

EverWood is made from an inorganic material, so it won’t absorb moisture or decay over time. That means you’ll enjoy remarkably reliable performance and lasting beauty.

Available Options for this Collection

Infinity from Marvin

Awning Window
Bay Window
Bow Window
Casement Window
Double Hung Window
Round Top Window
Single Hung Window
Slider Window
Specialty Shapes Windows

Inswing French Door
Sliding French Door
Sliding Patio Door

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Download Catalogs

Get more detailed information on your favorite products by downloading product and technical specification catalogs.

Installation Services

Windows & Doors By Brownell is here to make your window and door installation as easy as possible.

Service, Parts & Warranty

Our Service Department is here to ensure performance over the lifetime of your Marvin windows and doors.

Care & Maintenance

Keep your windows and doors looking and operating like new year after year with routine care and maintenance.