The Energy Saver Package (ESP) option on the 500 Insul-Tec brings even more to the table. An excellent choice for total value and energy efficiency. These replacement double hung windows are guaranteed to last. You will love the look and features. The 500 is also available for new construction projects.
- 7% Better than Energy Star® minimum
- 1500% Better AI rating (Air Infiltration) than Industry Standard
- 3¼" Deep welded frame curved colonial exterior a beautiful, strong long lasting performance.
- Heatseal® warm edge spacer dramatically reduces condensation on the inside of your windows.
- Full integral interlock with double weather-stripping.
- Available Auto-Lock features for added security.
- Fiberglass mesh half screens are standard.with optional screen locks for added security.
| Energy Star | Comparison To | ||||||
| Glazing Option | U-Value | SHGC | VT | CR | Minimum* | Energy Star Minimum | |
| Dual Glazed | |||||||
| With ESP | 0.28 | 0.30 | 0.55 | 62 | 0.30 |
7% Better |
|
| Industry | Comparison To | ||||||
| Our Windows | Minimum | Industry Minimum | |||||
| AAMA Rating | R50 | R15 | |||||
| Air Infiltration cfm/ft2 | 0.02 | 0.3 | 1500% | Better | |||
| Water Penetration mph | 54 | 33 | 64% | Better | |||
| Structural Integrity mph | 171 | 94 | 82% | Better | |||
