Infinity By Marvin Ultrex Fiberglass Windows

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Ultrex Strength

Infinity® replacement windows and doors are made from Ultrex fiberglass – a kind of reinforced fiberglass material that’s so strong and durable it performs better than other window materials. Best of all, it means that Infinity products are virtually maintenance-free.

Created for strength and beauty

Our patented process begins with strong glass cables saturated with specially compounded resins which are then pulled through a heated die before being cut with diamond-edge blades. You can see below the steps that Ultrex goes through, from forming and curing all the way up to cutting. These steps help ensure the creation of a remarkably durable material able to outlast and outperform other materials used for windows.

Ultrex® fiberglass

Why Infinity by Marvin Ultrex fiberglass windows

Infinity by Marvin windows are made from Ultrex® fiberglass, a material that stays strong and stable through years of temperature swings. For Tri-Valley homes that see hot summers and cool winters, that means windows that keep their shape, seal, and finish for the long term.

8x^* Stronger than vinyl, so frames resist bowing and warping
38%^** Longer useful life expectancy than vinyl windows
Up to 30%^*** Lower heating and cooling bills with Low-E glazing

Low maintenance

Fiberglass frames won't rot or need regular repainting, so you spend less time on upkeep.
Strength that holds its shape

Ultrex fiberglass is strong enough to keep windows square and true over time.
Low expansion, smooth operation

The material expands and contracts very little with heat and cold, so windows open easily and last longer.
Long-term stability

A stable frame reduces the risk of seal failures and air leakage as your windows age.
Narrow frames, bigger views

Slimmer profiles leave more visible glass, so you get more light and a wider view.
The look of traditional wood

Intricate frame profiles replicate the detail of traditional wooden windows without the upkeep.
A finish built to last

A patented, mechanically bonded acrylic finish, up to 3x thicker than competitive finishes, resists discoloration, scratches, and dents.
Made from an abundant resource

Ultrex fiberglass starts with silica sand, an abundant natural resource.

Schedule a consultation See it in our Pleasanton showroom

* Based on material stiffness when the product performs as designed. Stiffness is the material's flexural modulus, expressed in pounds per square inch.

** "Life Cycle Assessment of Windows for the North American Residential Market: Case Study" by the University of British Columbia. Scandinavian Journal of Forest Research, 2008.

*** Estimated savings are based on data from the Window Selection Tool of the Efficient Windows Collaborative, available at efficientwindows.org. Actual savings will vary depending on product type, location, method of installation, individual home characteristics, local climate and conditions, utility rates, and other factors.

Ultrex Performance

Cold, heat, and time – no worries

Anlin windows are designed with state-of-the-art features and technology to reduce energy consumption and, in turn, your heating and cooling costs. With thermal performance exceeding industry standards, you can enjoy a comfortable home year-round and significant savings over time.

Low thermal expansion means a stronger seal

Constructed with superior materials, these windows are designed to resist common issues, such as leaking, warping, flaking, and seal failure. Moreover, they are robust enough to withstand even the harshest weather conditions, ensuring your home is always protected.

See The Difference In Person

Visit Our Pleasanton Showroom

Full-size Infinity from Marvin window and door displays let you feel the frame weight, compare finishes, and get your questions answered face-to-face. Appointments preferred.

2142 Rheem Drive, Pleasanton, CA

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Infinity Stones

Infinity offers Stone White as our standard exterior color, although Sierra, Cashmere, Pebble Gray, Bahama Brown, Bronze, and Ebony are also available.

Stone White

Sierra

Cashmere

Pebble Gray

Bahama Brown

Bronze

Ebony

Infinity Interior Color Options

Infinity offers Stone White as our standard interior color. Homeowners can also choose from Sierra and EverWood®, our stainable wood grain interior finish.

Stone White

Sierra

EverWood

The difference is in the details

Vinyl Competitor

Infinity

Infinity offers Stone White as our standard exterior color, although Sierra, Cashmere, Pebble Gray, Bahama Brown, Bronze, and Ebony are also available.

Fiberglass Competitor

Infinity

Infinity uses a patented, mechanically-bonded finish, which works better compared to competitors’ thin painted finish that could eventually expose the rough fiberglass material.

Ultrex Strength

Created for strength and beauty

Why Infinity by Marvin Ultrex fiberglass windows

Low maintenance

Strength that holds its shape

Low expansion, smooth operation

Long-term stability

Narrow frames, bigger views

The look of traditional wood

A finish built to last

Made from an abundant resource