Kova’s new line of high-performance windows are suitable for new builds or retrofits. Several custom sizes and configurations are available, including horizontal slider, picture window and two-panel sliding patio doors. Features include heavy-duty reinforced vinyl profiles, water intrusion protection, a warm-edge spacer, argon gas fill and operable hardware. Three performance tiers are available: performance, performance plus and performance select. Each meets Energy Star 6.0 requirements for the entire U.S.