Fiberglass replacement windows and doors are durable and need no maintenance. They’re resistant to temperature extremes and moisture, don’t rust or splinter, and do an excellent job of holding their structural integrity over time. The American Architectural Manufacturers Association labels fiberglass as “an environmentally-friendly material that’s built to last.” Like wood replacement windows, fiberglass replacement windows are made from a sustainable resource.

We pride ourselves on the assortment of Fiberglass products we offer, many which have nearly identical traits to their wood counterparts. With Fiberglass products you get:

  • Custom Sizing Available
  • Energy Star Efficiency
  • Custom Fit and Finish
  • Low Maintenance
  • 38% Longer Life Expectancy

Once regarded as a niche product with maybe 2% share of total U.S. window sales, a recent market report shows fiberglass with a 3.2% share of market that is continuing to grow. Fiberglass can be fabricated into almost any shape or design. There are few restrictions on color, finish, shape, or size. This offers many opportunities to homeowners to allow their creativity to flow. If you can imagine it, then it can most likely be fabricated out of fiberglass. The finished product will be lighter, stronger, lower maintenance and, in most cases, less costly than manufacturing the same product out of alternate materials.

The Infinity brand is Built for life®. Infinity Replacement Windows was created in 2002 when we recognized an opportunity to offer high-quality fiberglass replacement windows and doors for discerning homeowners, that are professionally installed by retailers. Our products are made of Ultrex fiberglass and were designed by Marvin experts to replicate the look of traditional wood windows while providing modern features and low maintenance. The combination of superior materials, design experience, and professional installation has resulted in a product line of high performing, energy efficient, and long lasting windows and doors.


Infinity® replacement windows and doors are made from Ultrex fiberglass – a pultruded fiberglass material so strong and durable it is superior to other window materials. Best of all, it makes Infinity products virtually maintenance free.

Advantages of Ultrex fiberglass

  • Low maintenance
  • Base material is silica sand — an abundant natural resource
  • Intricate profiles replicate the look of traditional wood windows
  • Low expansion provides easy operation for the life of the window
  • Strength keeps windows square and true
  • Narrow profiles allow for more visible glass area and expanded views
  • Long-term stability reduces the risk of seal failures and air leakage through the window
  • Patented, mechanically bonded inline acrylic finish is up to 3x thicker than competitive finishes, providing superior resistance to discoloring, scratching, and denting
  • Ultrex fiberglass is 8x stronger than vinyl and one square inch can support 41,000 pounds!*
  • Fiberglass windows have a 38% longer useful life expectancy than vinyl.**

Neuma Doors is an industry leader in the quality and innovative design of fiberglass and composite doors, backed by the strength and expertise of Nan Ya Plastics Corp. USA. With extensive experience in creative design and production technology, quality control is built into each step of production. Nan Ya Plastics has been awarded with ISO 9001 and ISO 14001 certifications, which represent internationally recognized sets of standards in quality and environmental management systems.

Vertical integration and ISO certification means that every step of the production cycle, from the manufacture of the raw materials to the final door assembly, incorporates stringent quality control measures. This tightly controlled comprehensive approach to production allows Neuma Doors to ensure a lifetime of dependability for each door system.

If you are looking for the best in High Impact Fiberglass Sliding or Swinging Patio doors, Neuma is a must see. Their entire collection of door systems is created to offer the ultimate protection from the elements no matter how bad the conditions get. As we all know from living on the Texas Gulf Coast, it is important to have protection for winds up to 170 miles an hour. Now you can achieve the look and feel of a traditional wood door free from water absorption, warping, splintering or molding thanks to a specially engineered composite fiberglass material with Hydroshield.

 We’ve discussed ProVia before, but we haven’t yet explored their Fiberglass window and door products. Real quality is evident as you will see in the full collection of Entry Doors, Swinging and Sliding Patio Doors from ProVia. Their unmatched strength and durability features quality touches like dovetailed stiles and rails and heavy duty hinges to ensure structural integrity for years to come. You can choose from the Signet fiberglass door collection that has an incredibly lifelike wood grain thanks to high definition embossing or the Heritage collection with heights up to 8 feet in Oak or Hemlock textures in single or double designs in your choice of 7 stains or 16 painted finishes.

Recently, ProVia launched it’s new Embarq brand, Embarq is the most energy-efficient entry door system in the U.S. market, engineered and produced by the only door company to win the ENERGY STAR Partner of the Year Award for Door Manufacturing. This innovative fiberglass entry door provides a U-factor of 0.10 — the lowest recorded heat conduction measurement for entry doors in the U.S.

In addition to being energy-efficient, the Embarq fiberglass entry door is durable and beautiful, available in a number of styles, finishes, glass options and custom sizes.