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Home -> Windows -> Serious Windows Serious Windows 725 Seires Description SeriousWindows 725 Series Our lowest-priced fiberglass option that is still twice as efficient as competing brands and exceeds Energy Star standards by 100%. Not only do you get the beauty and comfort you want in a window but also significant energy cost savings. Features: • Up to R-7.1 insulation 2.5x Energy Star® rating • 99.5% UV Protection (reduced fading) • Reduced condensation • Increased comfort with less draft in winter and reduced solar heat in summer • Lower energy bills • Over 28 years experience in both residential and commercial windows • Can contribute to LEED credits • Decrease the size of your HVAC system The SeriousWindows 725 Series is our lowest cost/highest value fiberglass framed product line. The environmentally friendly fiberglass frame offers greater strength and durability than wood and vinyl products. Datasheet: 0e00954bc4_SeriousWindows_725_Dsheet.pdf LEED Information: b37cf2fdf7_Sustainable_Materials_dsheet_SW.pdf Sign up for our mailing list . Email this page to a friend