THE FIBERGLASS DIFFERENCE
Materials Matter
The power of Ultrex® fiberglass
Infinity from Marvin windows are crafted with a proprietary Ultrex® material, made up of millions of fiberglass strands. This advanced composition is what gives their windows superior performance, setting them apart from the rest.
Ultrex vs. vinyl
Over time, vinyl tends to warp and shift, making it harder to open and close your windows. In contrast, the strength of Ultrex fiberglass ensures your windows perform as smoothly on day 10,000 as they did on the first day.
Ultrex vs. wood
While wood offers timeless beauty, it demands constant maintenance and care. Ultrex, however, is virtually maintenance-free and can be paired with stainable, paintable EverWood® interiors, giving you the classic look of wood without the hassle.
Endures unlike any other
Withstands 285° F
Weathers the extremes
The strength of Ultrex, paired with their exclusive acrylic finish, ensures your frames resist warping, bending, flexing, and fading — even in the harshest conditions.
3x thicker
Finished to last, beautifully
This proprietary acrylic finish is resistant to dents, chips, scratches, chalking, and fading. Three times thicker than others on the market, it provides a smooth appearance that lasts for years.
87% less expansion
Maintains leak-proof fit
Ultrex frames expand less than both vinyl and Fibrex®, keeping a tight fit around your glass panes and ensuring a secure, energy-efficient seal year after year.
Compare Infinity
Vinyl
Vinyl/Wood Composites (Fibrex®)
Infinity Ultrex Fiberglass
Discover the Ultrex Fiberglass Difference - Schedule Your Free Consultation Today!
Strongest window framing material in the replacement industry
8x stronger than vinyl and 3x stronger than Fibrex®, Ultrex is the strongest window framing material in the replacement industry, outperforming other materials. Its resistance to bending and flexing provides a level of confidence that Fibrex® and vinyl simply can't match.
Bigger views and more daylight with fiberglass windows
Because of Ultrex's exceptional strength, this allows for narrower frames, giving you more daylight and bigger views than other replacement windows. And that's just one of the many ways Ultrex fiberglass goes above and beyond expectations.
Harnessing the strength of fiberglass
From the initial fiberglass strands to the final product, each step ensures Ultrex® fiberglass' exceptional performance and reliability.
