Fiberglass windows

Marvin Infinity Fiberglass window wall Berwyn, PA 19312
Integrity windows and doors are made with Ultrex®, a pultruded fiberglass patented by Marvin that outperforms and outlasts vinyl, roll-form aluminum and other fiberglass composites. Marvin uses Ultrex and a proprietary pultrusion process to manufacture high-demand windows and doors that endure all elements without showing age or wear.
Marvin Clad Wood Casement Bay Lansdale, PA 19446
Ultrex fiberglass is eight times stronger than vinyl and three times stronger than vinyl/wood composites like Fibrex. It resists fading, chalking, peeling and cracking, giving you unparalleled strength and durability.
Marvin Infinity double hung windows Newark, DE 19711
Integrity wood/Ultrex windows are constructed of Ultrex with wood interior giving you the look and feel and warmth of a traditional wood window with the strength and durability of Ultrex.

Integrity All Ultrex windows give you a sleek, contemporary look with minimal sash lines and maximum glass area.

“Excellent work, our installer was a true craftsman. ”

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