You’ve heard of vinyl windows. You’ve heard of aluminum windows. But what you haven’t heard is that Ultrex fiberglass windows outperform them both. And with Integrity All Ultrex windows, you get the unmatched strength and low maintenance of Ultrex both inside and out. The strength of the Ultrex material lends itself to contemporary designs and narrow sightlines you won’t find in other materials. Factor in the special sizes and proven energy efficiency and you have a window that is perfect for any home.