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Marvin Windows and Doors is proud to offer the ONLY 100% composite window made of super durable Ultrex Fiberglass! This window install in Springfield, PA featured the Inifinty Window by Marvin and came in a factory assembled triple unit for a one-of-a-kind installation. Do add more glass space, this customer converted the two double hung windows into casement windows with Marvin's easy wash crank handle. Since all of our Marvin Windows are made to the exact size, we can guarantee a perfect install every time! For your Free Replacement Window Estimate call Global Home Improvement at 1-855-201-7963.