This PRO Series window from United Window & Door is specially designed for new construction. It features our durable and elegant Brilliance solid white vinyl that will never peel, warp, blister, or flake. The double pane glass is filled with Low-E and Argon gas for increased efficiency. The fully welded frame and sashes allow for both top and bottom sashes to open for ventilation and tilt in for easy cleaning. The exterior and interior are both made of Brilliance white vinyl. The window also includes a corrosion resistant, Teflon coated, stainless steel constant force balance system for smooth and effortless operation. Its true sloped sill is designed to repel water more effectively than other drainage systems. For added security, the window comes with Nite locks that prevent it from being opened more than 2 inches. The full screen is crafted from dark fiberglass mesh, offering ventilation and visibility while keeping insects out.