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Marvin® Essential, formally known as Integrity Windows and Doors are made with Ultrex®, a pultruded fiberglass we’ve patented that outperforms and outlasts vinyl, roll-form aluminum and other fiberglass composites. We use Ultrex and our proprietary pultrusion process to manufacture high-demand windows and doors that endure all elements without showing age or wear.
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WindowRama offers the complete line of quality, energy-efficient Andersen 100 Series windows and patio doors. Andersen 100 Series products are engineered with the exclusive Fibrex® composite material, providing you with a durable, sustainable and energy efficient solution.
Learn more about Andersen 100 Series by WindowRama