AMSCO Windows offers a wide selection of premium vinyl windows and cutting-edge resin composite windows. The company s vinyl windows include: the AMSCO Traditional Series, which feature efficiency and affordability; the AMSCO Legacy Series, which feature added strength and durability; and the AMSCO Heritage Series, which offer peak performance and appearance. AMSCO s resin composite windows are made from a proprietary resin composite formulation extruded for strength and covered with PVC capstock for durability. In order to meet the National Fenestration Rating Council guidelines, the company s products meet predetermined criteria for u-factor, solar heat gain, visible transmittance and air leakage. AMSCO Windows maintains headquarters in Salt Lake City.