The Window Man Replacement Windows
The Window Man Replacement Windows

Infinity Ultrex Fiberglass Replacement Window from Marvin

Infinity Ultrex Fiberglass Replacement Window from Marvin



W.W.B.V.D. (What Would Bob Villa Do?)

Curious about the differences (substantial) between fiberglass and vinyl windows?  Click here to read a very powerful and detailed article educating consumers on not only the differences between the products, but also some shocking facts (did you know that a fiberglass window can last up to 50 years before needing replaced???).  Oh, and by the way, we carry the INDUSTRY-LEADER in replacement windows, the Infinity from Marvin Ultrex Fiberglass replacement window!


Infinity Replacement Windows was created when Marvin recognized an opportunity to offer high quality fiberglass replacement windows and doors professionally installed for discerning homeowners.

Infinity replacement windows and doors are designed to replicate the look of traditional wood windows while providing modern features, superior energy efficiency and low maintenance performance.

Infinity was established in 2002, and is manufactured in West Fargo, North Dakota. Although relatively new, Infinity has always had the distinct advantage of leveraging the vast experience of Marvin Windows and Doors. The revolutionary Ultrex fiberglass from which Infinity is made has been used for almost twenty years in other Marvin products. And the style and performance of the Infinity product line is directly attributable to a seasoned Marvin design team with decades of window engineering experience. This combination of superior materials and design experience has resulted in a product line of high quality, energy efficient, long lasting windows and doors that will provide you years of reliable performance.

A positive replacement experience requires knowledgeable experts who handle your project from start to finish. That’s why Infinity products are only available from specially selected, independent experts who understand your needs and the local installation requirements in your area. Infinity’s specially selected local retailers will assure your project is simple and hassle-free.

We look forward to serving you on your replacement window and door project.





  • Choose from six popular exterior color options.  All colors feature the durable, low-maintenance performance of Ultrex  and can also be painted for limitless color options.
  • Infinity Windows and Doors are available with three interior finish options.  All interior finishes offer durable, low-maintenance performance for years of lasting beauty.
  • The beauty of wood without the maintenance!  EverWood is a revolutionary wood grain finish that looks, feels and stains like wood, yet requires virtually no maintenance. 
  • Create a custom-looking window or patio door with a variety of hardware finish options.
  • Whether you want to re-create the look of your original windows or just add some curb appeal, grille patterns add architectural interest to any home.
  • Infinity offers optional High-Transparency screens for increased visibility and insect protection.
  • Infinity Windows and Doors are available with a variety of energy-efficent glass options.


Replacement window

  •  Double Hung windows operate by sliding either of the sashes up and down within the window frame.  This is one of the most common window styles.
  •  Casement windows are hinged on one side and operate by turning a crank at the bottom of the window.
  •  Awning windows are top-hinged and operate by turning a crank at the bottom of the window.
  •  Glider windows (also called sliders or sliding windows) operate by sliding the sash side to side.
  •  A dramatic improvement to any living space – Infinity® Polygon and Picture Windows are  designed to accentuate the unique architecture of your home.
  •  Bow windows include four or more windows of the same size joined together to make a curved shape.  Bow windows protrude from an exterior wall similar to Bay windows.
  •  Bay windows protrude out from an exterior wall and generally have three sides.  Typically this includes a  larger stationary window in the center flanked by two smaller windows on either side.
  •  Infinity  Sliding French Doors feature the traditional look of a French door with space-saving sliding operation.  The Sliding French Door is made of the same low-maintenance Ultrex fiberglass as Infinity Windows for lasting durability.
  • Infinity Sliding Patio Doors feature a narrower profile to provide a larger glass area. The Sliding Patio Door featrures the same durable, low-maintenance Ultrexfiberglass interior and exterior as the Sliding French Doors from Infinity.
  • Integrity  Inswing and Outswing French Doors provide a larger opening than sliding doors and are great for high-traffic areas.  They are made of the same durable, low-maintenance Ultrex  exterior as Infinity Windows.


Infinity Windows Limited Lifetime Warranty

Infinity windows are covered by a Limited Lifetime Warranty. Owner-occupants of single-family dwellings who have purchased their windows and doors through an authorized Infinity retailer are eligible for the Limited Lifetime Warranty.

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