The EcoShield 2000 double hung is our most popular vinyl replacement window. The slimline frame and sash design allow for maximum viewing area, while our ST glazing package meets the latest, most rigorous Energy Star standards. It’s one of the most functional, most efficient vinyl double hung windows on the planet.
| Glazing | U-Value | SHGC | VLT |
|---|---|---|---|
| ST Energy Star | 0.29 | 0.29 | 0.55 |
| HP Low E | 0.34 | 0.29 | 0.55 |
| Clear | 0.48 | 0.63 | 0.65 |
Not sure what the difference is between a double hung window and a single hung window? Check our frequently asked questions page for answers to common window questions. View or print installation instructions for replacement double hung windows.