Excalibur Double Hung windows may be the ideal choice for anyone who wants energy efficient windows with elegant design.   These top quality windows are manufactured in modern factories that take advantage of innovative technologies in order to satisfy even the most difficult requests.   Alside Excalibur Double Hung windows meet Energy Star Guidelines and come with the Alside Lifetime Limited Warranty.

1. The Alside Excalibur window is made from vinyl so it will never chip, peel, crack or warp.
2. The Excalibur Double Hung has a multi-chambered sash and mainframe – this creates several insulating air spaces that helps increase its thermal efficiency.
3. Double Strength glass and an insulated glass unit
4. Alside’s PPG Intercept Warm-Edge Spacer System also helps maximize thermal efficiency
5. For added security and comfort, the Alside Excalibur Double Hung interlocks at the sash meeting rail
6. To help reduce air infiltration, a protective bulb seal is placed at the meeting rail
7. The Alside Excalibur Double Hung has drop-in glazing for extra protection