Fiberglass Windows from Infinity® by Marvin® Searching for the right fiberglass windows for your Colorado home? Infinity® by Marvin® makes the choice simple. Built with patented Ultrex® pultruded fiberglass, Infinity® windows deliver the timeless beauty of wood with the strength, durability, and low-maintenance performance of fiberglass engineered to stand up to Colorado’s extreme climate. For … Continue reading Windows