The 800 Series Enviro-Star double pane with ESP is a great choice. ESP = the Energy Saver Package with foam filled frame. Your family room, great room or dining room will be a show place for light and the open feeling of large picture windows. Let us show you the difference...quality and low pricing from Wonder Windows Buffalo.
- 10% Better than Energy Star® minimum
- 3000% Better Air Infiltration protection
- Wide selection of glass, grids and shapes and sizes
- Superior craftsmanship
- Full 3¼" Depth Welded Mainframe
- Beveled colonial exterior features
- Available in standard and custom exterior colors
- Maintenance free, for years of long lasting performance.
- Heatseal® warm edge spacer system for excellent thermal efficiency
- Lower condensation on the inside of the window.
- Available in Replacement and New Construction applications
| Energy Star | Comparison To | ||||||
| Glazing Option | U-Value | SHGC | VT | CR | Minimum* | Energy Star Minimum | |
| Dual Glazed | |||||||
| With ESP | 0.27 | 0.31 | 0.56 | 63 | 0.30 | 10% Better | |
| Industry | Comparison To | ||||||
| Our Windows | Minimum | Industry Minimum | |||||
| AAMA Rating | R 75 | R 15 | |||||
| Air Infiltration cfm/ft2 | 0.01 | 0.3 | 3000% | Better | |||
| Water Penetration mph | 66 | 33 | 100% | Better | |||
| Structural Integrity mph | 210 | 94 | 123% | Better | |||
