Window World's Double-Hung windows are the perfect combination of beautiful, classic style and next-generation technology. With two operating, vertically stacked lites, these superbly crafted windows bring easy maintenance and energy efficiency to new heights. A wide selection of decorative options makes upgrading any home uniquely personal.

• Two operating, vertically stacked tilt-in sash for easy cleaning from inside the home.
• Most popular type of vinyl window and historically accurate for many traditional home styles.
• ENERGYSTAR qualifying glass packages.
• Multi-chambered sash and mainframe design ensures thermal efficiency.
• Fusion welding on mainframe and sash enhances durability.
• Warm-Edge spacer system improves window seal and keeps edge-of-glass-temperatures consistent.
• Sloped sill forces water to drain to exterior of the window.
• High-quality vinyl components never chip, peel, crack or warp like wood.
• Dual ventilator locks provide a secure way to keep windows open for fresh air.
• Protective bulb seal and wind flap provide a secondary barrier to keep out dust, noise and moisture.