Since the late 1930’s, Marvin has been creating windows of superior quality with a personal touch.  The company has earned a reputation for fine craftsmanship, using only quality materials to build windows and doors that are beautiful and long-lasting.  Recognizing a need for maintenance free windows, Marvin launched Infinity, a revolutionary line of exceptional replacement products, specifically for homeowners just like you.

You and Your Home Deserve Infinity Replacement Windows

Attractive, durable, virtually maintenance-free and professionally installed by our employees at Wrightway Home Improvements, Infinity windows are made (inside and out) with Ultrex© – a pultruded fiberglass material that outperforms and outlasts all other window materials.



Ultrex Fiberglass is 8x stronger than vinyl and can take whatever your family and mother nature dish out.  In fact, it is such a solid, long lasting material that it is trusted for use in bridge construction.

Made with strong cables of glass that are saturated with specially compounded resins, Ultrex is durable, non-corrosive, has low thermal conductivity, and is virtually maintenance free.  The superior strength of Ultrex fiberglass allows the window frame profile to be narrower than those with frames made of vinyl or wood, giving you more visible glass area.  And no matter how extreme the temperatures get in your region of the country, Ultrex stays square and true.

The proof is in your hands. Here are 5 Reasons Wrightway chooses Marvin Infinity for replacement projects.


  • Home comfort—no leakage, no drafts. top thermal
  • Design Pressure (DP) means Infinity’ windows will handle the pressure ot 132 MPH winds and are watertight when exposed to 8″ Of rain per hour driven by 42 MPH winds
  • Infinity Windows meet ENERGY STAR guidelines
  • Infinity windows come standard with high performance Low E2 argon-filled glass


  • Low maintenance. durable. will look good over time
  • Infinity windows are made entirely of durable, pultruded fiberglass material
  • Ultrex fiberglass is 8x stronger than vinyl and 3.5x stronger than wood/vinyl composites
  • Fiberglass has a very low thermal expansion rate (similar to glass), which keeps the window stable and weathertight
  • Fiberglass is virtually maintenance-free and won’t rot, warp, dent or fade


  • Attractive, easy to operate, easy to wash
  • A narrower window profile gives you more daylight and a better view
  • Infinity windows are extremely easy to operate and clean from the interior of your home
  • Designed to replicate the details and beauty of traditional wood windows
  • Available with an EverWood” interior which looks, feels, paints, and stains like wood yet is inorganic and completely low maintenance


  • Peace of mind. no-hassle experience
  • Wrightway Home Improvements has decades of experience and will be sure the entire process, from selection through installation, is simple and hassle-free
  • Infinity products are backed by Marvin Windows and Doors


  • Satisfaction of the best windows for the best price
  • Infinity from Marvin offers superior performance, materials, appearance, design, reliability, and expertise
  • All these features at a competitive price


Wrightway Home Improvements is the best window installer in Fond du Lac, Oshkosh, and Appleton areas. We have an expansive service area and we are experts in replacing siding, windows, and gutters and installing gutter guards. If you think your windows might need a fresh update, we can help you each step of the way and free up some of your time for more important things. Find out more about our Infinity from Marvin Windows at