The triple pane Deluxe Okna Enviro-Star 800 Series slider with heavy duty foam filled frame goes to the next level of energy efficiency. This high-end window is a perfect choice for homeowners in the Northeast. Let Wonder Windows show you the difference between our windows and any other manufacturer.
- 33% Better U-Value than Energy Star® minimum
- 600% Better Air Infiltration protection
- Wide selection of hardware options
- Superior craftsmanship
- Full integral interlock with double weather-stripping.
- 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 and drastic reduction in the possibility of 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 | |
| Triple Glazed | |||||||
| Deluxe | 0.20 | 0.25 | 0.41 | 73 | 0.30 | 33% Better | |
| Industry | Comparison To | ||||||
| Our Windows | Minimum | Industry Minimum | |||||
| AAMA Rating | R 50 | R 15 | |||||
| Air Infiltration cfm/ft2 | 0.05 | 0.3 | 600% | Better | |||
| Water Penetration mph | 62 | 33 | 88% | Better | |||
| Structural Integrity mph | 171 | 94 | 82% | Better |
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