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Fiberglass Replacement Windows

Why choose fiberglass?

Fiberglass windows from Pella offer strength and durability with the ability to withstand extreme temperatures. Fiberglass is a low-maintenance material with a quality look. Choose your window style and enjoy the quality look and energy efficiency of fiberglass.
Fiberglass Replacement Windows

Used in a range of commercial and industrial items, fiberglass is a naturally strong material, making it a great option for windows. In fact, Pella’s proprietary fiberglass material is the strongest material for windows.* In addition to its strength, fiberglass is long-lasting, low-maintenance, and resistant to the chipping, chalking, and fading. This window material doesn't expand or contract when the weather changes and acts as an insulator, giving you a long-term energy-efficient window frame.

Fiberglass windows are:

  • Durability
  • Maintenance-free
  • Weather resistant

Explore Your Options with an Expert

Expert craftsmanship takes expert product knowledge. A Pella windows and doors expert can help you pick out the window that fits your home — and your style. Find your local Pella representative to schedule a free in-home consultation, measurement, and estimate. Or visit your nearest showroom for a guided tour of your options. No pressure. No cost to you.

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Explore Pella's Fiberglass Windows